diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7e45067..dba1c16 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,7 +17,6 @@ jobs:
             # macOS is just too slow, ugh
           #- macos-latest
         ocaml-compiler:
-          - 4.03.x
           - 4.08.x
           - 4.12.x
     runs-on: ${{ matrix.os }}