diff --git a/.github/workflows/_docs.yml b/.github/workflows/_docs.yml
index 6f29235e..49fff6c2 100644
--- a/.github/workflows/_docs.yml
+++ b/.github/workflows/_docs.yml
@@ -26,8 +26,11 @@ jobs:
       - name: Remove environment.pickle
         run: rm build/html/.doctrees/environment.pickle
 
+      - name: Sanitize ref name for docs version
+        run: echo "DOCS_VERSION=${GITHUB_REF_NAME//[^A-Za-z0-9._-]/_}" >> $GITHUB_ENV
+
       - name: Move to versioned directory
-        run: mv build/html build/${GITHUB_REF_NAME//[^A-Za-z0-9._-]/_}
+        run: mv build/html build/$DOCS_VERSION
 
       - name: Upload built docs artifact
         uses: actions/upload-artifact@v4