diff --git a/.github/workflows/bundle.yml b/.github/workflows/bundle.yml
index 81155df3..92b483b4 100644
--- a/.github/workflows/bundle.yml
+++ b/.github/workflows/bundle.yml
@@ -30,6 +30,8 @@ jobs:
 
       - name: Install the project
         run: uv sync --all-extras --dev
+        env:
+          UV_LOCKED: ${{ github.ref_name == 'main' && 1 || 0 }}
 
       - name: Bundle
         shell: bash
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b3d769b7..c2a6b8dd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,7 +34,7 @@ jobs:
     name: ${{ matrix.platform }} py${{ matrix.python-version }}
     runs-on: ${{ matrix.platform }}
     env:
-      UV_LOCKED: true
+      UV_FROZEN: true
     strategy:
       fail-fast: false
       matrix: