diff --git a/.github/workflows/purge-cache.yml b/.github/workflows/purge-cache.yml
index f53581852d3..2e4ae20ee28 100644
--- a/.github/workflows/purge-cache.yml
+++ b/.github/workflows/purge-cache.yml
@@ -32,8 +32,9 @@ jobs:
     needs: purge-cache
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-20.04]
         INSTALL_TYPE: [pip, conda]
         PYTHON_VERSION: ['3.8', '3.10', '3.12']
         include: