diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 5bf4684a0..22fc75081 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -38,8 +38,8 @@ jobs:
       fail-fast: false
       matrix:
         server_image:
-          - 'ocamlsf/learn-ocaml:0.12'
-          - 'ocamlsf/learn-ocaml:0.13.0'
+          # - 'ocamlsf/learn-ocaml:0.12'
+          # - 'ocamlsf/learn-ocaml:0.13.0'
           - 'learn-ocaml'  # use learn-ocaml image built from master
     env:
       USE_CLIENT_IMAGE: 'true'