diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7422d819..ff726447 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,6 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         python_version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        pants_python_version: [3.11]
         os: ["ubuntu-latest"]
     steps:
       - name: Clone repo
@@ -33,7 +34,7 @@ jobs:
       - name: Initialize Pants
         uses: pantsbuild/actions/init-pants@main
         with:
-          gha-cache-key: cache0-py${{ matrix.python_version }}
+          gha-cache-key: cache0-py${{ matrix.pants_python_version }}
           named-caches-hash: ${{ hashFiles('requirements.txt') }}
       - name: Check BUILD files
         run: |