diff --git a/.github/actions/mise-project-setup/action.yaml b/.github/actions/mise-project-setup/action.yaml
index b584751..d3f2b49 100644
--- a/.github/actions/mise-project-setup/action.yaml
+++ b/.github/actions/mise-project-setup/action.yaml
@@ -128,6 +128,7 @@ runs:
 
         echo "::group::Environment changes for rest of workflow"
         {
+          echo "MISE_OFFLINE=true"
           echo "MISE_PREPARE_AUTO=false"
           echo "UV_PYTHON_DOWNLOADS=never"
         } | tee -a "${GITHUB_ENV}"