diff --git a/.github/workflows/mypy_primer.yaml b/.github/workflows/mypy_primer.yaml
index 56f4d37c9c..2431b7433d 100644
--- a/.github/workflows/mypy_primer.yaml
+++ b/.github/workflows/mypy_primer.yaml
@@ -45,7 +45,7 @@ jobs:
 
       - name: Install mypy_primer
         run: |
-          uv tool install "git+https://github.com/astral-sh/mypy_primer.git@add-red-knot-support"
+          uv tool install "git+https://github.com/astral-sh/mypy_primer.git@add-red-knot-support-v1"
 
       - name: Run mypy_primer
         shell: bash