diff --git a/.github/workflows/docker-manual.yml b/.github/workflows/docker-manual.yml
index 44e25534..59055838 100644
--- a/.github/workflows/docker-manual.yml
+++ b/.github/workflows/docker-manual.yml
@@ -35,7 +35,12 @@ jobs:
 
       - name: Extract tag version from branch name
         id: extract_tag_version
-        run: echo "VERSION=$(echo ${{ github.head_ref }} | sed 's/^ckan-//')" >> $GITHUB_ENV
+        run: |
+          if [ "${{ github.head_ref }}" = "master" ]; then
+            echo "VERSION=master" >> $GITHUB_ENV
+          else
+            echo "VERSION=$(echo ${{ github.head_ref }} | sed 's/^ckan-//')" >> $GITHUB_ENV
+          fi
 
       - name: Extract Docker metadata
         id: meta
@@ -76,4 +81,4 @@ jobs:
         uses: github/codeql-action/upload-sarif@v3
         if: always()
         with:
-          sarif_file: trivy-results.sarif
\ No newline at end of file
+          sarif_file: trivy-results.sarif