diff --git a/.github/workflows/buildcache.yml b/.github/workflows/buildcache.yml
index 0c2b249d..10367519 100644
--- a/.github/workflows/buildcache.yml
+++ b/.github/workflows/buildcache.yml
@@ -37,6 +37,11 @@ jobs:
           gcc: ${{ matrix.gcc }}
           fresh: true
 
+      - name: Login to OCI registry
+        shell: spack-bash {0}
+        run: spack oci login ghcr.io --username ${{ github.actor }} --password-stdin <<< ${{ secrets.GITHUB_TOKEN }}
+
       - name: Push to buildcache
         if: ${{ !cancelled() }}
+        shell: spack-bash {0}
         run: spack buildcache push --unsigned --update-index local-buildcache