diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 985d463..c58d05d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,7 +46,7 @@ jobs:
     name: Indicate completion to coveralls.io
     needs: test
     runs-on: ubuntu-latest
-    container: python:3-slim@sha256:044d5bd747976e21f8bc4d746c3479b19a84bb8ae6261b802acdd26b29036c93
+    container: python:3-slim@sha256:533b0b2f9b5d46fd097091cf826f27902f1d6c3bca714b6dc74551356aa97a51
     steps:
     - name: Finished
       run: |