diff --git a/.github/workflows/build-and-test-callable.yml b/.github/workflows/build-and-test-callable.yml
index 25957369..5fb23ff3 100644
--- a/.github/workflows/build-and-test-callable.yml
+++ b/.github/workflows/build-and-test-callable.yml
@@ -98,6 +98,9 @@ jobs:
         sudo apt-get install mpich libmpich-dev
         pip install mpi4py
 
+    - name: Purge PIP cache
+      run: pip cache purge
+
     - name: Cache CUDA
       if: inputs.cuda
       id: cache-cuda