diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index d2704c7..8e9677a 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -39,6 +39,7 @@ jobs:
         if: startsWith(github.ref, 'refs/tags/v')
         run: |
           REF_NAME=${{ github.ref_name }}
+          MAJOR_MINOR=${REF_NAME%.*}
           # strip the leading v from the ref_name
           # update the latest alias          
-          nix develop --command bash -c "mike deploy -p -u ${REF_NAME:1} latest"      
+          nix develop --command bash -c "mike deploy -p -u ${MAJOR_MINOR:1} latest"