diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1fa91272..80a6d4ba 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,8 +14,7 @@ jobs:
           - windows-latest
             #- macos-latest  # clogs CI
         ocaml-compiler:
-          - 4.04.x
-          - 4.10.x
+          - 4.08.x
           - 4.12.x
     runs-on: ${{ matrix.os }}
     steps: