diff --git a/.github/workflows/core-build.yml b/.github/workflows/core-build.yml
index 5f6e1b6..37dc783 100644
--- a/.github/workflows/core-build.yml
+++ b/.github/workflows/core-build.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        compiler: [clang6, clang9, clang10]
+        compiler: [clang]
     runs-on: ubuntu-20.04
     name: ${{ matrix.compiler }}
     env:
@@ -42,4 +42,4 @@ jobs:
       - name: Dry run
         run: source ./apps/ci/ci-worldserver-dry-run.sh
       - name: Check startup errors
-        run: source ./apps/ci/ci-error-check.sh
\ No newline at end of file
+        run: source ./apps/ci/ci-error-check.sh