diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7b0abd9..958ee31 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -25,6 +25,10 @@ jobs:
         run: |
           set -exo pipefail
           for vars in distros/*; do
+            if [[ "${vars}" == *.sh ]]; then
+              "./${vars}"
+              vars=${vars%.sh}
+            fi
             packer validate -except=upload -var-file=${vars} sources/
           done