diff --git a/Cargo.toml b/Cargo.toml
index 9b31060a2d..9616155310 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -48,3 +48,4 @@ tree_hash_derive = { path = "eth2/utils/tree_hash_derive" }
 eth2_ssz = { path = "eth2/utils/ssz" }
 eth2_ssz_derive = { path = "eth2/utils/ssz_derive" }
 eth2_ssz_types = { path = "eth2/utils/ssz_types" }
+eth2_hashing = { path = "eth2/utils/eth2_hashing" }
diff --git a/account_manager/Cargo.toml b/account_manager/Cargo.toml
index 32d2286c8e..fc3df1e8da 100644
--- a/account_manager/Cargo.toml
+++ b/account_manager/Cargo.toml
@@ -6,10 +6,10 @@ edition = "2018"
 
 [dependencies]
 bls = { path = "../eth2/utils/bls" }
-clap = "2.32.0"
-slog = "^2.2.3"
-slog-term = "^2.4.0"
-slog-async = "^2.3.0"
+clap = "2.33.0"
+slog = "2.5.2"
+slog-term = "2.4.2"
+slog-async = "2.3.0"
 validator_client = { path = "../validator_client" }
 types = { path = "../eth2/types" }
-dirs = "2.0.1"
+dirs = "2.0.2"
diff --git a/beacon_node/Cargo.toml b/beacon_node/Cargo.toml
index 0e42990182..8238b5f8da 100644
--- a/beacon_node/Cargo.toml
+++ b/beacon_node/Cargo.toml
@@ -12,16 +12,16 @@ types = { path = "../eth2/types" }
 store = { path = "./store" }
 client = { path = "client" }
 version = { path = "version" }
-clap = "2.32.0"
-rand = "0.7"
-slog = { version = "^2.2.3" , features = ["max_level_trace", "release_max_level_trace"] }
-slog-term = "^2.4.0"
-slog-async = "^2.3.0"
-ctrlc = { version = "3.1.1", features = ["termination"] }
-tokio = "0.1.15"
-tokio-timer = "0.2.10"
-futures = "0.1.25"
-exit-future = "0.1.3"
-env_logger = "0.6.1"
-dirs = "2.0.1"
+clap = "2.33.0"
+rand = "0.7.2"
+slog = { version = "2.5.2", features = ["max_level_trace", "release_max_level_trace"] }
+slog-term = "2.4.2"
+slog-async = "2.3.0"
+ctrlc = { version = "3.1.3", features = ["termination"] }
+tokio = "0.1.22"
+tokio-timer = "0.2.11"
+exit-future = "0.1.4"
+env_logger = "0.7.1"
+dirs = "2.0.2"
 logging = { path = "../eth2/utils/logging" }
+futures = "0.1.29"
diff --git a/beacon_node/beacon_chain/Cargo.toml b/beacon_node/beacon_chain/Cargo.toml
index 02a45d1374..b69564047c 100644
--- a/beacon_node/beacon_chain/Cargo.toml
+++ b/beacon_node/beacon_chain/Cargo.toml
@@ -12,28 +12,28 @@ write_ssz_files = []  # Writes debugging .ssz files to /tmp during block process
 eth2_config = { path = "../../eth2/utils/eth2_config" }
 merkle_proof = { path = "../../eth2/utils/merkle_proof" }
 store = { path = "../store" }
-parking_lot = "0.7"
-lazy_static = "1.3.0"
+parking_lot = "0.9.0"
+lazy_static = "1.4.0"
 lighthouse_metrics = { path = "../../eth2/utils/lighthouse_metrics" }
 lighthouse_bootstrap = { path = "../../eth2/utils/lighthouse_bootstrap" }
-log = "0.4"
+log = "0.4.8"
 operation_pool = { path = "../../eth2/operation_pool" }
-rayon = "1.0"
-serde = "1.0"
-serde_derive = "1.0"
-serde_yaml = "0.8"
-serde_json = "^1.0"
-slog = { version = "^2.2.3" , features = ["max_level_trace"] }
-sloggers = { version = "^0.3" }
+rayon = "1.2.0"
+serde = "1.0.102"
+serde_derive = "1.0.102"
+serde_yaml = "0.8.11"
+serde_json = "1.0.41"
+slog = { version = "2.5.2", features = ["max_level_trace"] }
+sloggers = "0.3.4"
 slot_clock = { path = "../../eth2/utils/slot_clock" }
-eth2_hashing = { path = "../../eth2/utils/eth2_hashing" }
-eth2_ssz = "0.1"
-eth2_ssz_derive = "0.1"
+eth2_hashing = "0.1.0"
+eth2_ssz = "0.1.2"
+eth2_ssz_derive = "0.1.0"
 state_processing = { path = "../../eth2/state_processing" }
-tree_hash = "0.1"
+tree_hash = "0.1.0"
 types = { path = "../../eth2/types" }
 lmd_ghost = { path = "../../eth2/lmd_ghost" }
 
 [dev-dependencies]
-rand = "0.5.5"
-lazy_static = "1.3.0"
+rand = "0.7.2"
+lazy_static = "1.4.0"
diff --git a/beacon_node/client/Cargo.toml b/beacon_node/client/Cargo.toml
index e557217938..ec0c14159a 100644
--- a/beacon_node/client/Cargo.toml
+++ b/beacon_node/client/Cargo.toml
@@ -12,22 +12,22 @@ eth2-libp2p = { path = "../eth2-libp2p" }
 rpc = { path = "../rpc" }
 rest_api = { path = "../rest_api" }
 websocket_server = { path = "../websocket_server" }
-prometheus = "^0.6"
+prometheus = "0.7.0"
 types = { path = "../../eth2/types" }
-tree_hash = "0.1"
+tree_hash = "0.1.0"
 eth2_config = { path = "../../eth2/utils/eth2_config" }
 slot_clock = { path = "../../eth2/utils/slot_clock" }
-serde = "1.0.93"
-serde_derive = "1.0"
-error-chain = "0.12.0"
-serde_yaml = "0.8"
-slog = { version = "^2.2.3" , features = ["max_level_trace"] }
-slog-async = "^2.3.0"
-slog-json = "^2.3"
-tokio = "0.1.15"
-clap = "2.32.0"
-dirs = "1.0.3"
-exit-future = "0.1.3"
-futures = "0.1.25"
-reqwest = "0.9"
-url = "1.2"
+serde = "1.0.102"
+serde_derive = "1.0.102"
+error-chain = "0.12.1"
+serde_yaml = "0.8.11"
+slog = { version = "2.5.2", features = ["max_level_trace"] }
+slog-async = "2.3.0"
+slog-json = "2.3.0"
+tokio = "0.1.22"
+clap = "2.33.0"
+dirs = "2.0.2"
+exit-future = "0.1.4"
+futures = "0.1.29"
+reqwest = "0.9.22"
+url = "2.1.0"
diff --git a/beacon_node/eth2-libp2p/Cargo.toml b/beacon_node/eth2-libp2p/Cargo.toml
index ccc6efb6d9..8982e17669 100644
--- a/beacon_node/eth2-libp2p/Cargo.toml
+++ b/beacon_node/eth2-libp2p/Cargo.toml
@@ -5,28 +5,28 @@ authors = ["Age Manning <Age@AgeManning.com>"]
 edition = "2018"
 
 [dependencies]
-clap = "2.32.0"
+clap = "2.33.0"
 hex = "0.3"
 #SigP repository 
-libp2p =  { git = "https://github.com/SigP/rust-libp2p", rev = "8ac9c744197faaadc0e2b64fed7470ac4e2a41ca" }
-enr =  { git = "https://github.com/SigP/rust-libp2p/", rev = "8ac9c744197faaadc0e2b64fed7470ac4e2a41ca", features = ["serde"] }
+libp2p =  { git = "https://github.com/SigP/rust-libp2p", rev = "cdd5251d29e21a01aa2ffed8cb577a37a0f9e2eb" }
+enr =  { git = "https://github.com/SigP/rust-libp2p/", rev = "cdd5251d29e21a01aa2ffed8cb577a37a0f9e2eb", features = ["serde"] }
 types = { path =  "../../eth2/types" }
-serde = "1.0"
-serde_derive = "1.0"
-eth2_ssz = "0.1"
-eth2_ssz_derive = "0.1"
-slog = { version = "^2.4.1" , features = ["max_level_trace"] }
+serde = "1.0.102"
+serde_derive = "1.0.102"
+eth2_ssz = "0.1.2"
+eth2_ssz_derive = "0.1.0"
+slog = { version = "2.5.2", features = ["max_level_trace"] }
 version = { path = "../version" }
-tokio = "0.1.16"
-futures = "0.1.25"
-error-chain = "0.12.0"
-tokio-timer = "0.2.10"
-dirs = "2.0.1"
+tokio = "0.1.22"
+futures = "0.1.29"
+error-chain = "0.12.1"
+tokio-timer = "0.2.11"
+dirs = "2.0.2"
 tokio-io = "0.1.12"
-smallvec = "0.6.10"
+smallvec = "0.6.11"
 fnv = "1.0.6"
-unsigned-varint = "0.2.2"
+unsigned-varint = "0.2.3"
 bytes = "0.4.12"
 tokio-io-timeout = "0.3.1"
-lazy_static = "1.3.0"
+lazy_static = "1.4.0"
 lighthouse_metrics = { path = "../../eth2/utils/lighthouse_metrics" }
diff --git a/beacon_node/eth2-libp2p/src/behaviour.rs b/beacon_node/eth2-libp2p/src/behaviour.rs
index a47d32ec2a..aa11d586ff 100644
--- a/beacon_node/eth2-libp2p/src/behaviour.rs
+++ b/beacon_node/eth2-libp2p/src/behaviour.rs
@@ -153,8 +153,10 @@ impl<TSubstream: AsyncRead + AsyncWrite> NetworkBehaviourEventProcess<IdentifyEv
 {
     fn inject_event(&mut self, event: IdentifyEvent) {
         match event {
-            IdentifyEvent::Identified {
-                peer_id, mut info, ..
+            IdentifyEvent::Received {
+                peer_id,
+                mut info,
+                observed_addr,
             } => {
                 if info.listen_addrs.len() > MAX_IDENTIFY_ADDRESSES {
                     debug!(
@@ -167,11 +169,12 @@ impl<TSubstream: AsyncRead + AsyncWrite> NetworkBehaviourEventProcess<IdentifyEv
                 "Protocol Version" => info.protocol_version,
                 "Agent Version" => info.agent_version,
                 "Listening Addresses" => format!("{:?}", info.listen_addrs),
+                "Observed Address" => format!("{:?}", observed_addr),
                 "Protocols" => format!("{:?}", info.protocols)
                 );
             }
+            IdentifyEvent::Sent { .. } => {}
             IdentifyEvent::Error { .. } => {}
-            IdentifyEvent::SendBack { .. } => {}
         }
     }
 }
diff --git a/beacon_node/eth2-libp2p/src/config.rs b/beacon_node/eth2-libp2p/src/config.rs
index fa20d2cdd0..cacad9c206 100644
--- a/beacon_node/eth2-libp2p/src/config.rs
+++ b/beacon_node/eth2-libp2p/src/config.rs
@@ -82,7 +82,7 @@ impl Default for Config {
             gs_config: GossipsubConfigBuilder::new()
                 .max_transmit_size(1_048_576)
                 .heartbeat_interval(Duration::from_secs(20)) // TODO: Reduce for mainnet
-                .propagate_messages(false) // require validation before propagation
+                .manual_propagation(true) // require validation before propagation
                 .build(),
             boot_nodes: vec![],
             libp2p_nodes: vec![],
diff --git a/beacon_node/eth2-libp2p/src/discovery.rs b/beacon_node/eth2-libp2p/src/discovery.rs
index 69ca39ad79..380914af5b 100644
--- a/beacon_node/eth2-libp2p/src/discovery.rs
+++ b/beacon_node/eth2-libp2p/src/discovery.rs
@@ -286,7 +286,7 @@ fn load_enr(
     // Build the local ENR.
     // Note: Discovery should update the ENR record's IP to the external IP as seen by the
     // majority of our peers.
-    let mut local_enr = EnrBuilder::new()
+    let mut local_enr = EnrBuilder::new("v4")
         .ip(config.discovery_address)
         .tcp(config.libp2p_port)
         .udp(config.discovery_port)
@@ -302,7 +302,7 @@ fn load_enr(
                 match Enr::from_str(&enr_string) {
                     Ok(enr) => {
                         if enr.node_id() == local_enr.node_id() {
-                            if enr.ip() == config.discovery_address.into()
+                            if enr.ip().map(Into::into) == Some(config.discovery_address)
                                 && enr.tcp() == Some(config.libp2p_port)
                                 && enr.udp() == Some(config.discovery_port)
                             {
diff --git a/beacon_node/eth2-libp2p/src/service.rs b/beacon_node/eth2-libp2p/src/service.rs
index f9c06a532d..2ffafb855e 100644
--- a/beacon_node/eth2-libp2p/src/service.rs
+++ b/beacon_node/eth2-libp2p/src/service.rs
@@ -8,12 +8,8 @@ use crate::{Topic, TopicHash};
 use futures::prelude::*;
 use futures::Stream;
 use libp2p::core::{
-    identity::Keypair,
-    multiaddr::Multiaddr,
-    muxing::StreamMuxerBox,
-    nodes::Substream,
+    identity::Keypair, multiaddr::Multiaddr, muxing::StreamMuxerBox, nodes::Substream,
     transport::boxed::Boxed,
-    upgrade::{InboundUpgradeExt, OutboundUpgradeExt},
 };
 use libp2p::{core, secio, PeerId, Swarm, Transport};
 use slog::{crit, debug, info, trace, warn};
@@ -206,7 +202,7 @@ impl Stream for Service {
 fn build_transport(local_private_key: Keypair) -> Boxed<(PeerId, StreamMuxerBox), Error> {
     // TODO: The Wire protocol currently doesn't specify encryption and this will need to be customised
     // in the future.
-    let transport = libp2p::tcp::TcpConfig::new();
+    let transport = libp2p::tcp::TcpConfig::new().nodelay(true);
     let transport = libp2p::dns::DnsConfig::new(transport);
     #[cfg(feature = "libp2p-websocket")]
     let transport = {
@@ -214,22 +210,15 @@ fn build_transport(local_private_key: Keypair) -> Boxed<(PeerId, StreamMuxerBox)
         transport.or_transport(websocket::WsConfig::new(trans_clone))
     };
     transport
-        .with_upgrade(secio::SecioConfig::new(local_private_key))
-        .and_then(move |out, endpoint| {
-            let peer_id = out.remote_key.into_peer_id();
-            let peer_id2 = peer_id.clone();
-            let upgrade = core::upgrade::SelectUpgrade::new(
-                libp2p::yamux::Config::default(),
-                libp2p::mplex::MplexConfig::new(),
-            )
-            // TODO: use a single `.map` instead of two maps
-            .map_inbound(move |muxer| (peer_id, muxer))
-            .map_outbound(move |muxer| (peer_id2, muxer));
-
-            core::upgrade::apply(out.stream, upgrade, endpoint)
-                .map(|(id, muxer)| (id, core::muxing::StreamMuxerBox::new(muxer)))
-        })
-        .with_timeout(Duration::from_secs(20))
+        .upgrade(core::upgrade::Version::V1)
+        .authenticate(secio::SecioConfig::new(local_private_key))
+        .multiplex(core::upgrade::SelectUpgrade::new(
+            libp2p::yamux::Config::default(),
+            libp2p::mplex::MplexConfig::new(),
+        ))
+        .map(|(peer, muxer), _| (peer, core::muxing::StreamMuxerBox::new(muxer)))
+        .timeout(Duration::from_secs(20))
+        .timeout(Duration::from_secs(20))
         .map_err(|err| Error::new(ErrorKind::Other, err))
         .boxed()
 }
diff --git a/beacon_node/network/Cargo.toml b/beacon_node/network/Cargo.toml
index ffeba96ec5..b58f2fd7cb 100644
--- a/beacon_node/network/Cargo.toml
+++ b/beacon_node/network/Cargo.toml
@@ -5,19 +5,19 @@ authors = ["Age Manning <Age@AgeManning.com>"]
 edition = "2018"
 
 [dev-dependencies]
-sloggers = "0.3.2"
+sloggers = "0.3.4"
 
 [dependencies]
 beacon_chain =  { path = "../beacon_chain" }
 store =  { path = "../store" }
 eth2-libp2p =  { path = "../eth2-libp2p" }
 types = { path = "../../eth2/types" }
-slog = { version = "^2.2.3" , features = ["max_level_trace"] }
+slog = { version = "2.5.2", features = ["max_level_trace"] }
 hex = "0.3"
-eth2_ssz = "0.1"
-tree_hash = "0.1"
-futures = "0.1.25"
-error-chain = "0.12.0"
-tokio = "0.1.16"
+eth2_ssz = "0.1.2"
+tree_hash = "0.1.0"
+futures = "0.1.29"
+error-chain = "0.12.1"
+tokio = "0.1.22"
 parking_lot = "0.9.0"
-smallvec = "0.6.10"
+smallvec = "0.6.11"
diff --git a/beacon_node/rest_api/Cargo.toml b/beacon_node/rest_api/Cargo.toml
index 7ea21eeba3..ac019b97c0 100644
--- a/beacon_node/rest_api/Cargo.toml
+++ b/beacon_node/rest_api/Cargo.toml
@@ -12,28 +12,28 @@ network = { path = "../network" }
 eth2-libp2p = { path = "../eth2-libp2p" }
 store = { path = "../store" }
 version = { path = "../version" }
-serde = { version = "1.0", features = ["derive"] }
-serde_json = "^1.0"
-serde_yaml = "0.8"
-slog = "^2.2.3"
-slog-term = "^2.4.0"
-slog-async = "^2.3.0"
-eth2_ssz = { path = "../../eth2/utils/ssz" }
-eth2_ssz_derive = { path = "../../eth2/utils/ssz_derive" }
+serde = { version = "1.0.102", features = ["derive"] }
+serde_json = "1.0.41"
+serde_yaml = "0.8.11"
+slog = "2.5.2"
+slog-term = "2.4.2"
+slog-async = "2.3.0"
+eth2_ssz = "0.1.2"
+eth2_ssz_derive = "0.1.0"
 state_processing = { path = "../../eth2/state_processing" }
 types = { path = "../../eth2/types" }
-clap = "2.32.0"
-http = "^0.1.17"
-prometheus = { version = "^0.6", features = ["process"] }
-hyper = "0.12.34"
-exit-future = "0.1.3"
-tokio = "0.1.17"
-url = "2.0"
-lazy_static = "1.3.0"
+clap = "2.33.0"
+http = "0.1.19"
+prometheus = { version = "0.7.0", features = ["process"] }
+hyper = "0.12.35"
+exit-future = "0.1.4"
+tokio = "0.1.22"
+url = "2.1.0"
+lazy_static = "1.4.0"
 eth2_config = { path = "../../eth2/utils/eth2_config" }
 lighthouse_metrics = { path = "../../eth2/utils/lighthouse_metrics" }
 slot_clock = { path = "../../eth2/utils/slot_clock" }
-hex = "0.3.2"
-parking_lot = "0.9"
-futures = "0.1.25"
+hex = "0.3"
+parking_lot = "0.9.0"
+futures = "0.1.29"
 
diff --git a/beacon_node/rpc/Cargo.toml b/beacon_node/rpc/Cargo.toml
index 8fc13a1bd6..93a5239e48 100644
--- a/beacon_node/rpc/Cargo.toml
+++ b/beacon_node/rpc/Cargo.toml
@@ -11,13 +11,13 @@ network = { path = "../network" }
 eth2-libp2p = { path = "../eth2-libp2p" }
 version = { path = "../version" }
 types = { path = "../../eth2/types" }
-eth2_ssz = "0.1"
+eth2_ssz = "0.1.2"
 protos = { path = "../../protos" }
-grpcio = { version = "0.4", default-features = false, features = ["protobuf-codec"] }
-clap = "2.32.0"
-futures = "0.1.23"
-serde = "1.0"
-serde_derive = "1.0"
-slog = { version = "^2.2.3" , features = ["max_level_trace"] }
-tokio = "0.1.17"
+grpcio = { version = "0.4.6", default-features = false, features = ["protobuf-codec"] }
+clap = "2.33.0"
+futures = "0.1.29"
+serde = "1.0.102"
+serde_derive = "1.0.102"
+slog = { version = "2.5.2", features = ["max_level_trace"] }
+tokio = "0.1.22"
 exit-future = "0.1.4"
diff --git a/beacon_node/store/Cargo.toml b/beacon_node/store/Cargo.toml
index cd9711253e..d613c12000 100644
--- a/beacon_node/store/Cargo.toml
+++ b/beacon_node/store/Cargo.toml
@@ -5,15 +5,15 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
 edition = "2018"
 
 [dev-dependencies]
-tempfile = "3"
+tempfile = "3.1.0"
 
 [dependencies]
 db-key = "0.0.5"
 leveldb = "0.8.4"
-parking_lot = "0.7"
-eth2_ssz = "0.1"
-eth2_ssz_derive = "0.1"
-tree_hash = "0.1"
+parking_lot = "0.9.0"
+eth2_ssz = "0.1.2"
+eth2_ssz_derive = "0.1.0"
+tree_hash = "0.1.0"
 types = { path =  "../../eth2/types" }
-lazy_static = "1.3.0"
+lazy_static = "1.4.0"
 lighthouse_metrics = { path = "../../eth2/utils/lighthouse_metrics" }
diff --git a/beacon_node/websocket_server/Cargo.toml b/beacon_node/websocket_server/Cargo.toml
index 48f046e074..2922d5fa5d 100644
--- a/beacon_node/websocket_server/Cargo.toml
+++ b/beacon_node/websocket_server/Cargo.toml
@@ -8,13 +8,13 @@ edition = "2018"
 
 [dependencies]
 beacon_chain = { path = "../beacon_chain" }
-clap = "2.32.0"
-exit-future = "0.1.3"
-futures = "0.1.25"
-serde = "1.0"
-serde_derive = "1.0"
-serde_json = "^1.0"
-slog = "^2.2.3"
-tokio = "0.1.16"
+clap = "2.33.0"
+exit-future = "0.1.4"
+futures = "0.1.29"
+serde = "1.0.102"
+serde_derive = "1.0.102"
+serde_json = "1.0.41"
+slog = "2.5.2"
+tokio = "0.1.22"
 types = { path = "../../eth2/types" }
-ws = "0.9"
+ws = "0.9.1"
diff --git a/eth2/lmd_ghost/Cargo.toml b/eth2/lmd_ghost/Cargo.toml
index 636076c466..e26b85626c 100644
--- a/eth2/lmd_ghost/Cargo.toml
+++ b/eth2/lmd_ghost/Cargo.toml
@@ -5,17 +5,17 @@ authors = ["Age Manning <Age@AgeManning.com>", "Paul Hauner <paul@sigmaprime.io>
 edition = "2018"
 
 [dependencies]
-parking_lot = "0.7"
+parking_lot = "0.9.0"
 store = { path = "../../beacon_node/store" }
 types = { path = "../types" }
 
 [dev-dependencies]
-criterion = "0.2"
-hex = "0.3.2"
-yaml-rust = "0.4.2"
+criterion = "0.3.0"
+hex = "0.3"
+yaml-rust = "0.4.3"
 bls = { path = "../utils/bls" }
 slot_clock = { path = "../utils/slot_clock" }
 beacon_chain = { path = "../../beacon_node/beacon_chain" }
-env_logger = "0.6.0"
-lazy_static = "1.3.0"
-rand = "0.7"
+env_logger = "0.7.1"
+lazy_static = "1.4.0"
+rand = "0.7.2"
diff --git a/eth2/operation_pool/Cargo.toml b/eth2/operation_pool/Cargo.toml
index 41edf8086c..9aa2b598da 100644
--- a/eth2/operation_pool/Cargo.toml
+++ b/eth2/operation_pool/Cargo.toml
@@ -6,12 +6,12 @@ edition = "2018"
 
 [dependencies]
 int_to_bytes = { path = "../utils/int_to_bytes" }
-itertools = "0.8"
-parking_lot = "0.7"
+itertools = "0.8.1"
+parking_lot = "0.9.0"
 types = { path = "../types" }
 state_processing = { path = "../state_processing" }
-eth2_ssz = "0.1"
-eth2_ssz_derive = { path = "../utils/ssz_derive" }
+eth2_ssz = "0.1.2"
+eth2_ssz_derive = "0.1.0"
 
 [dev-dependencies]
-rand = "0.5.5"
+rand = "0.7.2"
diff --git a/eth2/state_processing/Cargo.toml b/eth2/state_processing/Cargo.toml
index 1e29431991..96b8f20145 100644
--- a/eth2/state_processing/Cargo.toml
+++ b/eth2/state_processing/Cargo.toml
@@ -9,13 +9,13 @@ name = "benches"
 harness = false
 
 [dev-dependencies]
-criterion = "0.2"
-env_logger = "0.6.0"
-serde = "1.0"
-serde_derive = "1.0"
-lazy_static = "1.4"
-serde_yaml = "0.8"
-eth2_ssz = { path = "../utils/ssz" }
+criterion = "0.3.0"
+env_logger = "0.7.1"
+serde = "1.0.102"
+serde_derive = "1.0.102"
+lazy_static = "1.4.0"
+serde_yaml = "0.8.11"
+eth2_ssz = "0.1.2"
 beacon_chain = { path = "../../beacon_node/beacon_chain" }
 store = { path = "../../beacon_node/store" }
 lmd_ghost = { path = "../lmd_ghost" }
@@ -23,15 +23,15 @@ lmd_ghost = { path = "../lmd_ghost" }
 
 [dependencies]
 bls = { path = "../utils/bls" }
-integer-sqrt = "0.1"
-itertools = "0.8"
+integer-sqrt = "0.1.2"
+itertools = "0.8.1"
 eth2_ssz_types = { path = "../utils/ssz_types" }
 merkle_proof = { path = "../utils/merkle_proof" }
-log = "0.4"
-tree_hash = "0.1"
+log = "0.4.8"
+tree_hash = "0.1.0"
 tree_hash_derive = "0.2"
 types = { path = "../types" }
-rayon = "1.0"
+rayon = "1.2.0"
 
 [features]
 fake_crypto = ["bls/fake_crypto"]
diff --git a/eth2/types/Cargo.toml b/eth2/types/Cargo.toml
index 95d7a03174..9123ca6b32 100644
--- a/eth2/types/Cargo.toml
+++ b/eth2/types/Cargo.toml
@@ -8,27 +8,28 @@ edition = "2018"
 bls = { path = "../utils/bls" }
 compare_fields = { path = "../utils/compare_fields" }
 compare_fields_derive = { path = "../utils/compare_fields_derive" }
-dirs = "1.0"
-derivative = "1.0"
+dirs = "2.0.2"
+derivative = "1.0.3"
 eth2_interop_keypairs = { path = "../utils/eth2_interop_keypairs" }
-ethereum-types = "0.6"
-eth2_hashing = { path = "../utils/eth2_hashing" }
+ethereum-types = "0.8.0"
+eth2_hashing = "0.1.0"
 hex = "0.3"
 int_to_bytes = { path = "../utils/int_to_bytes" }
-log = "0.4"
-rayon = "1.0"
-rand = "0.5.5"
-serde = "1.0"
-serde_derive = "1.0"
-slog = "^2.2.3"
-eth2_ssz = "0.1"
-eth2_ssz_derive = "0.1"
+log = "0.4.8"
+rayon = "1.2.0"
+rand = "0.7.2"
+serde = "1.0.102"
+serde_derive = "1.0.102"
+slog = "2.5.2"
+eth2_ssz = "0.1.2"
+eth2_ssz_derive = "0.1.0"
 eth2_ssz_types = { path = "../utils/ssz_types" }
 swap_or_not_shuffle = { path = "../utils/swap_or_not_shuffle" }
 test_random_derive = { path = "../utils/test_random_derive" }
-tree_hash = "0.1"
+tree_hash = "0.1.0"
 tree_hash_derive = "0.2"
+rand_xorshift = "0.2.0"
 
 [dev-dependencies]
-env_logger = "0.6.0"
-serde_json = "^1.0"
+env_logger = "0.7.1"
+serde_json = "1.0.41"
diff --git a/eth2/types/src/test_utils/keypairs_file.rs b/eth2/types/src/test_utils/keypairs_file.rs
index a1ea4d928b..13b1b17f2d 100644
--- a/eth2/types/src/test_utils/keypairs_file.rs
+++ b/eth2/types/src/test_utils/keypairs_file.rs
@@ -91,7 +91,7 @@ mod tests {
     }
 
     fn random_tmp_file() -> String {
-        let mut rng = thread_rng();
+        let rng = thread_rng();
 
         rng.sample_iter(&Alphanumeric).take(7).collect()
     }
diff --git a/eth2/types/src/test_utils/mod.rs b/eth2/types/src/test_utils/mod.rs
index b3ecb9089c..0e5a6d41d2 100644
--- a/eth2/types/src/test_utils/mod.rs
+++ b/eth2/types/src/test_utils/mod.rs
@@ -10,8 +10,6 @@ pub use generate_deterministic_keypairs::generate_deterministic_keypair;
 pub use generate_deterministic_keypairs::generate_deterministic_keypairs;
 pub use generate_deterministic_keypairs::load_keypairs_from_yaml;
 pub use keypairs_file::KeypairsFile;
-pub use rand::{
-    RngCore,
-    {prng::XorShiftRng, SeedableRng},
-};
+pub use rand::{RngCore, SeedableRng};
+pub use rand_xorshift::XorShiftRng;
 pub use test_random::TestRandom;
diff --git a/eth2/utils/bls/Cargo.toml b/eth2/utils/bls/Cargo.toml
index 6638f13a26..dbee0cead6 100644
--- a/eth2/utils/bls/Cargo.toml
+++ b/eth2/utils/bls/Cargo.toml
@@ -5,16 +5,16 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
 edition = "2018"
 
 [dependencies]
-milagro_bls = { git = "https://github.com/sigp/milagro_bls", tag = "v0.11.0" }
-eth2_hashing = { path = "../eth2_hashing" }
+milagro_bls = { git = "https://github.com/sigp/milagro_bls", tag = "v0.11.1" }
+eth2_hashing = "0.1.0"
 hex = "0.3"
-rand = "^0.5"
-serde = "1.0"
-serde_derive = "1.0"
+rand = "0.7.2"
+serde = "1.0.102"
+serde_derive = "1.0.102"
 serde_hex = { path = "../serde_hex" }
-eth2_ssz = "0.1"
+eth2_ssz = "0.1.2"
 eth2_ssz_types = { path = "../ssz_types" }
-tree_hash = "0.1"
+tree_hash = "0.1.0"
 
 [features]
 fake_crypto = []
diff --git a/eth2/utils/eth2_config/Cargo.toml b/eth2/utils/eth2_config/Cargo.toml
index a125887480..7459cfed69 100644
--- a/eth2/utils/eth2_config/Cargo.toml
+++ b/eth2/utils/eth2_config/Cargo.toml
@@ -5,8 +5,8 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
 edition = "2018"
 
 [dependencies]
-clap = "2.32.0"
-serde = "1.0"
-serde_derive = "1.0"
-toml = "^0.5"
+clap = "2.33.0"
+serde = "1.0.102"
+serde_derive = "1.0.102"
+toml = "0.5.4"
 types = { path = "../../types" }
diff --git a/eth2/utils/eth2_hashing/Cargo.toml b/eth2/utils/eth2_hashing/Cargo.toml
index 665e89d597..3e7d8ed3f1 100644
--- a/eth2/utils/eth2_hashing/Cargo.toml
+++ b/eth2/utils/eth2_hashing/Cargo.toml
@@ -7,10 +7,10 @@ license = "Apache-2.0"
 description = "Hashing primitives used in Ethereum 2.0"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-ring = "0.14.6"
+ring = "0.16.9"
 
 [dev-dependencies]
 rustc-hex = "2.0.1"
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
-wasm-bindgen-test = "0.2.47"
+wasm-bindgen-test = "0.3.2"
diff --git a/eth2/utils/eth2_interop_keypairs/Cargo.toml b/eth2/utils/eth2_interop_keypairs/Cargo.toml
index fbebfa25da..b8969c6618 100644
--- a/eth2/utils/eth2_interop_keypairs/Cargo.toml
+++ b/eth2/utils/eth2_interop_keypairs/Cargo.toml
@@ -7,14 +7,14 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-lazy_static = "1.4"
-num-bigint = "0.2"
-eth2_hashing = "0.1"
+lazy_static = "1.4.0"
+num-bigint = "0.2.3"
+eth2_hashing = "0.1.0"
 hex = "0.3"
-milagro_bls = { git = "https://github.com/sigp/milagro_bls", tag = "v0.11.0" }
-serde_yaml = "0.8"
-serde = "1.0"
-serde_derive = "1.0"
+milagro_bls = { git = "https://github.com/sigp/milagro_bls", tag = "v0.11.1" }
+serde_yaml = "0.8.11"
+serde = "1.0.102"
+serde_derive = "1.0.102"
 
 [dev-dependencies]
-base64 = "0.10"
+base64 = "0.11.0"
diff --git a/eth2/utils/int_to_bytes/Cargo.toml b/eth2/utils/int_to_bytes/Cargo.toml
index f7424e0328..48c52548b1 100644
--- a/eth2/utils/int_to_bytes/Cargo.toml
+++ b/eth2/utils/int_to_bytes/Cargo.toml
@@ -5,8 +5,8 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
 edition = "2018"
 
 [dependencies]
-bytes = "0.4"
+bytes = "0.4.12"
 
 [dev-dependencies]
-yaml-rust = "0.4.2"
+yaml-rust = "0.4.3"
 hex = "0.3"
diff --git a/eth2/utils/lighthouse_bootstrap/Cargo.toml b/eth2/utils/lighthouse_bootstrap/Cargo.toml
index cfc4c6bafd..0e1bbc7448 100644
--- a/eth2/utils/lighthouse_bootstrap/Cargo.toml
+++ b/eth2/utils/lighthouse_bootstrap/Cargo.toml
@@ -9,8 +9,8 @@ edition = "2018"
 [dependencies]
 eth2_config = { path = "../eth2_config" }
 eth2-libp2p = { path = "../../../beacon_node/eth2-libp2p" }
-reqwest = "0.9"
+reqwest = "0.9.22"
 url = "1.2"
 types = { path = "../../types" }
-serde = "1.0"
-slog = { version = "^2.2.3" , features = ["max_level_trace", "release_max_level_trace"] }
+serde = "1.0.102"
+slog = { version = "2.5.2", features = ["max_level_trace", "release_max_level_trace"] }
diff --git a/eth2/utils/lighthouse_metrics/Cargo.toml b/eth2/utils/lighthouse_metrics/Cargo.toml
index 0a24a96fb5..3b01c63e41 100644
--- a/eth2/utils/lighthouse_metrics/Cargo.toml
+++ b/eth2/utils/lighthouse_metrics/Cargo.toml
@@ -7,5 +7,5 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-lazy_static = "1.3.0"
-prometheus = "^0.6"
+lazy_static = "1.4.0"
+prometheus = "0.7.0"
diff --git a/eth2/utils/logging/Cargo.toml b/eth2/utils/logging/Cargo.toml
index 62a8b41e0c..9d9405429e 100644
--- a/eth2/utils/logging/Cargo.toml
+++ b/eth2/utils/logging/Cargo.toml
@@ -5,5 +5,5 @@ authors = ["blacktemplar <blacktemplar@a1.net>"]
 edition = "2018"
 
 [dependencies]
-slog = { version = "^2.2.3" }
-slog-term = "^2.4.0"
+slog = "2.5.2"
+slog-term = "2.4.2"
diff --git a/eth2/utils/merkle_proof/Cargo.toml b/eth2/utils/merkle_proof/Cargo.toml
index 5ffb6af532..a342b5bea7 100644
--- a/eth2/utils/merkle_proof/Cargo.toml
+++ b/eth2/utils/merkle_proof/Cargo.toml
@@ -5,10 +5,10 @@ authors = ["Michael Sproul <michael@sigmaprime.io>"]
 edition = "2018"
 
 [dependencies]
-ethereum-types = "0.6"
-eth2_hashing = { path = "../eth2_hashing" }
-lazy_static = "1.3.0"
+ethereum-types = "0.8.0"
+eth2_hashing = "0.1.0"
+lazy_static = "1.4.0"
 
 [dev-dependencies]
-quickcheck = "0.8"
-quickcheck_macros = "0.8"
+quickcheck = "0.9.0"
+quickcheck_macros = "0.8.0"
diff --git a/eth2/utils/serde_hex/Cargo.toml b/eth2/utils/serde_hex/Cargo.toml
index b28194dd6f..06102f24ec 100644
--- a/eth2/utils/serde_hex/Cargo.toml
+++ b/eth2/utils/serde_hex/Cargo.toml
@@ -5,5 +5,5 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
 edition = "2018"
 
 [dependencies]
-serde = "1.0"
+serde = "1.0.102"
 hex = "0.3"
diff --git a/eth2/utils/slot_clock/Cargo.toml b/eth2/utils/slot_clock/Cargo.toml
index c4b9df5edd..e27395e42d 100644
--- a/eth2/utils/slot_clock/Cargo.toml
+++ b/eth2/utils/slot_clock/Cargo.toml
@@ -6,5 +6,5 @@ edition = "2018"
 
 [dependencies]
 types = { path = "../../types" }
-lazy_static = "1.3.0"
+lazy_static = "1.4.0"
 lighthouse_metrics = { path = "../lighthouse_metrics" }
diff --git a/eth2/utils/ssz/Cargo.toml b/eth2/utils/ssz/Cargo.toml
index ff5df162d8..53d75b697c 100644
--- a/eth2/utils/ssz/Cargo.toml
+++ b/eth2/utils/ssz/Cargo.toml
@@ -13,4 +13,4 @@ name = "ssz"
 eth2_ssz_derive = "0.1.0"
 
 [dependencies]
-ethereum-types = "0.6"
+ethereum-types = "0.8.0"
diff --git a/eth2/utils/ssz_types/Cargo.toml b/eth2/utils/ssz_types/Cargo.toml
index 732cea20d6..d019373e9f 100644
--- a/eth2/utils/ssz_types/Cargo.toml
+++ b/eth2/utils/ssz_types/Cargo.toml
@@ -8,13 +8,13 @@ edition = "2018"
 name = "ssz_types"
 
 [dependencies]
-tree_hash = "0.1"
-serde = "1.0"
-serde_derive = "1.0"
+tree_hash = "0.1.0"
+serde = "1.0.102"
+serde_derive = "1.0.102"
 serde_hex = { path = "../serde_hex" }
-eth2_ssz = "0.1"
-typenum = "1.10"
+eth2_ssz = "0.1.2"
+typenum = "1.11.2"
 
 [dev-dependencies]
-serde_yaml = "0.8"
+serde_yaml = "0.8.11"
 tree_hash_derive = "0.2"
diff --git a/eth2/utils/swap_or_not_shuffle/Cargo.toml b/eth2/utils/swap_or_not_shuffle/Cargo.toml
index 7c0e8151d8..2f7d331036 100644
--- a/eth2/utils/swap_or_not_shuffle/Cargo.toml
+++ b/eth2/utils/swap_or_not_shuffle/Cargo.toml
@@ -9,11 +9,11 @@ name = "benches"
 harness = false
 
 [dev-dependencies]
-criterion = "0.2"
-yaml-rust = "0.4.2"
+criterion = "0.3.0"
+yaml-rust = "0.4.3"
 hex = "0.3"
-ethereum-types = "0.6"
+ethereum-types = "0.8.0"
 
 [dependencies]
-eth2_hashing = { path = "../eth2_hashing" }
+eth2_hashing = "0.1.0"
 int_to_bytes = { path = "../int_to_bytes" }
diff --git a/eth2/utils/tree_hash/Cargo.toml b/eth2/utils/tree_hash/Cargo.toml
index 6cb18648db..e416a3f8e7 100644
--- a/eth2/utils/tree_hash/Cargo.toml
+++ b/eth2/utils/tree_hash/Cargo.toml
@@ -11,12 +11,12 @@ name = "benches"
 harness = false
 
 [dev-dependencies]
-criterion = "0.2"
-rand = "0.7"
+criterion = "0.3.0"
+rand = "0.7.2"
 tree_hash_derive = "0.2"
 types = { path = "../../types" }
 
 [dependencies]
-ethereum-types = "0.6"
-eth2_hashing = "0.1"
-lazy_static = "1.4"
+ethereum-types = "0.8.0"
+eth2_hashing = "0.1.0"
+lazy_static = "1.4.0"
diff --git a/lcli/Cargo.toml b/lcli/Cargo.toml
index 55bfc16544..d1dbdb221e 100644
--- a/lcli/Cargo.toml
+++ b/lcli/Cargo.toml
@@ -8,13 +8,13 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-clap = "2.33"
+clap = "2.33.0"
 hex = "0.3"
-log = "0.4"
-serde = "1.0"
-serde_yaml = "0.8"
-simple_logger = "1.0"
+log = "0.4.8"
+serde = "1.0.102"
+serde_yaml = "0.8.11"
+simple_logger = "1.3.0"
 types = { path = "../eth2/types" }
 state_processing = { path = "../eth2/state_processing" }
-eth2_ssz = { path = "../eth2/utils/ssz" }
-regex = "1.3"
+eth2_ssz = "0.1.2"
+regex = "1.3.1"
diff --git a/protos/Cargo.toml b/protos/Cargo.toml
index ab97e5fb3a..479273cfc7 100644
--- a/protos/Cargo.toml
+++ b/protos/Cargo.toml
@@ -6,9 +6,9 @@ edition = "2018"
 description = "Google protobuf message and service definitions used in Lighthouse APIs."
 
 [dependencies]
-futures = "0.1"
-grpcio = { version = "0.4", default-features = false, features = ["protobuf-codec"] }
-protobuf = "~2.8.1"
+futures = "0.1.29"
+grpcio = { version = "0.4.6", default-features = false, features = ["protobuf-codec"] }
+protobuf = "2.8.1"
 
 [build-dependencies]
-protoc-grpcio = "0.3.1"
+protoc-grpcio = "1.1.0"
diff --git a/protos/build.rs b/protos/build.rs
index 108d9e2ddb..5b45bb7f83 100644
--- a/protos/build.rs
+++ b/protos/build.rs
@@ -5,6 +5,6 @@ use std::path::Path;
 fn main() {
     let proto_root = Path::new("src");
     println!("cargo:rerun-if-changed={}", proto_root.display());
-    protoc_grpcio::compile_grpc_protos(&["services.proto"], &[proto_root], &proto_root)
+    protoc_grpcio::compile_grpc_protos(&["services.proto"], &[proto_root], &proto_root, None)
         .expect("Failed to compile gRPC definitions!");
 }
diff --git a/tests/ef_tests/Cargo.toml b/tests/ef_tests/Cargo.toml
index 24fe75fb3e..b0d281b8d6 100644
--- a/tests/ef_tests/Cargo.toml
+++ b/tests/ef_tests/Cargo.toml
@@ -12,18 +12,18 @@ fake_crypto = ["bls/fake_crypto"]
 [dependencies]
 bls = { path = "../../eth2/utils/bls" }
 compare_fields = { path = "../../eth2/utils/compare_fields" }
-ethereum-types = "0.6"
+ethereum-types = "0.8.0"
 hex = "0.3"
-rayon = "1.0"
-serde = "1.0"
-serde_derive = "1.0"
-serde_repr = "0.1"
-serde_yaml = "0.8"
-eth2_ssz = "0.1"
-eth2_ssz_derive = "0.1"
-tree_hash = "0.1"
+rayon = "1.2.0"
+serde = "1.0.102"
+serde_derive = "1.0.102"
+serde_repr = "0.1.5"
+serde_yaml = "0.8.11"
+eth2_ssz = "0.1.2"
+eth2_ssz_derive = "0.1.0"
+tree_hash = "0.1.0"
 tree_hash_derive = "0.2"
 state_processing = { path = "../../eth2/state_processing" }
 swap_or_not_shuffle = { path = "../../eth2/utils/swap_or_not_shuffle" }
 types = { path = "../../eth2/types" }
-walkdir = "2"
+walkdir = "2.2.9"
diff --git a/validator_client/Cargo.toml b/validator_client/Cargo.toml
index dcadf3b478..09cb52b76d 100644
--- a/validator_client/Cargo.toml
+++ b/validator_client/Cargo.toml
@@ -14,28 +14,28 @@ path = "src/lib.rs"
 
 [dependencies]
 bls = { path = "../eth2/utils/bls" }
-eth2_ssz = "0.1"
+eth2_ssz = "0.1.2"
 eth2_config = { path = "../eth2/utils/eth2_config" }
-tree_hash = "0.1"
-clap = "2.32.0"
+tree_hash = "0.1.0"
+clap = "2.33.0"
 lighthouse_bootstrap = { path = "../eth2/utils/lighthouse_bootstrap" }
 eth2_interop_keypairs = { path = "../eth2/utils/eth2_interop_keypairs" }
-grpcio = { version = "0.4", default-features = false, features = ["protobuf-codec"] }
+grpcio = { version = "0.4.6", default-features = false, features = ["protobuf-codec"] }
 protos = { path = "../protos" }
 slot_clock = { path = "../eth2/utils/slot_clock" }
 types = { path = "../eth2/types" }
-serde = "1.0"
-serde_derive = "1.0"
-serde_json = "^1.0"
-slog = { version = "^2.2.3" , features = ["max_level_trace", "release_max_level_trace"] }
-slog-async = "^2.3.0"
-slog-json = "^2.3"
-slog-term = "^2.4.0"
-tokio = "0.1.18"
-tokio-timer = "0.2.10"
-error-chain = "0.12.0"
-bincode = "^1.1.2"
-futures = "0.1.25"
-dirs = "2.0.1"
+serde = "1.0.102"
+serde_derive = "1.0.102"
+serde_json = "1.0.41"
+slog = { version = "2.5.2", features = ["max_level_trace", "release_max_level_trace"] }
+slog-async = "2.3.0"
+slog-json = "2.3.0"
+slog-term = "2.4.2"
+tokio = "0.1.22"
+tokio-timer = "0.2.11"
+error-chain = "0.12.1"
+bincode = "1.2.0"
+futures = "0.1.29"
+dirs = "2.0.2"
 logging = { path = "../eth2/utils/logging" }
-libc = "0.2"
+libc = "0.2.65"