diff --git a/src/version.bash b/src/version.bash
index 7b2c06801a0..b45f15a6c4f 100755
--- a/src/version.bash
+++ b/src/version.bash
@@ -18,6 +18,7 @@ fi
 
 # Find most recent known release tag.
 TAG=$(hg tags |
+	sed 's/:.*//' |
 	sort -rn -k2 |
 	awk -v ver=$VERSION '$2 <= ver && $1~/^(release|weekly)\./ {print $1}' |
 	sed -n 1p)