diff --git a/.github/workflows/pyinstaller-builds-actions-mmamba.yml b/.github/workflows/pyinstaller-builds-actions-mmamba.yml
index 7182ad1..24247c8 100644
--- a/.github/workflows/pyinstaller-builds-actions-mmamba.yml
+++ b/.github/workflows/pyinstaller-builds-actions-mmamba.yml
@@ -93,7 +93,7 @@ jobs:
         #miniconda-version: "latest"
         #auto-update-conda: true
         environment-name: test
-        environment-file: environment.yaml
+        environment-file: environment.yml
         extra-specs:
             python=3.9
     - name: Mamba install CadQuery and pyinstaller