diff --git a/scripts/generate_release_post.sh b/scripts/generate_release_post.sh
index e5984e77..01c06c49 100755
--- a/scripts/generate_release_post.sh
+++ b/scripts/generate_release_post.sh
@@ -4,7 +4,7 @@ set -eu
 VERSION="$1" # such as 5.3.0-rc.1, 5.0.0
 
 TEMP_VERSION_FILE="$(mktemp -t temp_version_file.XXXX)"
-git for-each-ref --sort=creatordate --format '%(refname)' refs/tags | grep "v[0-9]\.[0-9]\.[0-9]" | grep -v mas | grep -v "v$VERSION" | sed "s/refs\/tags\/v//" > $TEMP_VERSION_FILE
+git for-each-ref --sort=creatordate --format '%(refname)' refs/tags | grep "v[0-9]\+\.[0-9]\+\.[0-9]\+" | grep -v mas | grep -v "v$VERSION" | sed "s/refs\/tags\/v//" > $TEMP_VERSION_FILE
 LAST_VERSION="$(cat $TEMP_VERSION_FILE | tail -1)"
 
 TEMP_CHANGES_FILE="$(mktemp -t temp_changes_file.XXXX)"