diff --git a/.github/workflows/publish-to-pypi.yml b/.github/workflows/publish-to-pypi.yml
index 09100487..58dbafcd 100644
--- a/.github/workflows/publish-to-pypi.yml
+++ b/.github/workflows/publish-to-pypi.yml
@@ -11,7 +11,7 @@ jobs:
     name: Build distribution 📦
     runs-on: ubuntu-latest
     container:   # we have to provide a working triqs installation to make the cmake step work
-      image: ghcr.io/triqs/solid_dmft_github_ci:${{github.ref_name}}
+      image: ghcr.io/triqs/solid_dmft_github_ci:3.3.x
 
     steps:
     - uses: actions/checkout@v4