diff --git a/.github/workflows/release-testpypi.yml b/.github/workflows/release-testpypi.yml
index 4773357fd..6d2cba07d 100644
--- a/.github/workflows/release-testpypi.yml
+++ b/.github/workflows/release-testpypi.yml
@@ -32,7 +32,7 @@ jobs:
         with:
           python-version: "3.11"
       - name: Update Python Package Version
-        uses: platomo/update-version-py-action@v1
+        uses: platomo/update-version-py-action@v1.0.1
         with:
           version: nightly
           file-path: "OTAnalytics"