diff --git a/actions/setup/script.sh b/actions/setup/script.sh
index 76625d0..d685ace 100755
--- a/actions/setup/script.sh
+++ b/actions/setup/script.sh
@@ -40,7 +40,7 @@ EOF
     echo $version
   else
     if [ "${TAG_WITH_COMMIT_REF_SLUG:-true}" == "true" ]; then
-      version=$version.$COMMIT_REF_SLUG
+      version=$version-$COMMIT_REF_SLUG
     fi
     echo $version.$PIPELINE_ID
   fi