diff --git a/Cargo.toml b/Cargo.toml
index 9f625e8694..7f18c70119 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
 
 [dependencies]
 ethereum-types = ""
-rand = ""
+rand = "0.3"
 bytes = ""
 blake2 = "^0.7.1"
 crypto-mac = "^0.6.2"