diff --git a/common/lighthouse_version/src/lib.rs b/common/lighthouse_version/src/lib.rs
index f5d4d44878..c499bf0498 100644
--- a/common/lighthouse_version/src/lib.rs
+++ b/common/lighthouse_version/src/lib.rs
@@ -37,8 +37,9 @@ mod test {
 
     #[test]
     fn version_formatting() {
-        let re = Regex::new(r"^Lighthouse/v[0-9]+\.[0-9]+\.[0-9]+(-rc.[0-9])?-[[:xdigit:]]{7}\+?$")
-            .unwrap();
+        let re =
+            Regex::new(r"^Lighthouse/v[0-9]+\.[0-9]+\.[0-9]+(-rc.[0-9])?(-[[:xdigit:]]{7})?\+?$")
+                .unwrap();
         assert!(
             re.is_match(VERSION),
             "version doesn't match regex: {}",