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-rw-r--r--Library/Homebrew/cmd/update.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/Library/Homebrew/cmd/update.sh b/Library/Homebrew/cmd/update.sh
index 5f082024d..177958266 100644
--- a/Library/Homebrew/cmd/update.sh
+++ b/Library/Homebrew/cmd/update.sh
@@ -217,7 +217,7 @@ merge_or_rebase() {
if [[ "$DIR" = "$HOMEBREW_REPOSITORY" && -z "$HOMEBREW_NO_UPDATE_CLEANUP" ]]
then
- UPSTREAM_TAG="$(git tag --list --sort=-version:refname | head -n1)"
+ UPSTREAM_TAG="$(git tag --list --sort=-version:refname | grep '^[0-9]*\.[0-9]*\.[0-9]*$' | head -n1)"
else
UPSTREAM_TAG=""
fi