diff --git a/action.yml b/action.yml
index ba24b94..b6b23a8 100644
--- a/action.yml
+++ b/action.yml
@@ -55,7 +55,7 @@ runs:
 
             # extract branch name as is
             GIT_BRANCH_NAME=$(git branch --show-current)
-            GIT_BRANCH_FORMATTED=$(echo $GIT_BRANCH_NAME | grep -E '^[0-9]{2}\.[0-9]{2}\.[0-9]{1,2}$' | wc -l || echo 0)
+            GIT_BRANCH_FORMATTED=$(echo $GIT_BRANCH_NAME | grep -E '^[0-9]{1}\.[0-9]{2}\.[0-9]{2}$' | wc -l || echo 0)
           fi
 
           # get tag description