diff --git a/.github/workflows/build_GPU.yml b/.github/workflows/build_GPU.yml
index ebf876f..ffad9dc 100644
--- a/.github/workflows/build_GPU.yml
+++ b/.github/workflows/build_GPU.yml
@@ -17,13 +17,11 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Set Calver Version
-        uses: Nelyx/action-calver@v1.0.0
-        id: setcalver
-        with:
-          default_branch: 'refs/heads/main'
-          format: 'YYYY.M.D'
-          version_prefix: ''
+      - name: Get version from subgen.py
+        id: get_version
+        run: |
+          version=$(grep -oP "subgen_version\s*=\s*'\K[^']+" subgen.py)
+          echo "version=$version" >> $GITHUB_ENV
 
       - name: Login to Docker Hub
         uses: docker/login-action@v3
@@ -38,4 +36,4 @@ jobs:
           push: true
           tags: |
             mccloud/subgen:latest
-            mccloud/subgen:${{ steps.setcalver.outputs.package_version }}
+            mccloud/subgen:${{ env.version }}