diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8702e6b..9607542 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
         os:
           - ubuntu-latest
         ocaml-compiler:
-          - 5.2.x
+          - 5.3.x
 
     runs-on: ${{ matrix.os }}