diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 80e902a..36f5bb3 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        java-version: [21, 17]
+        java-version: [21]
     steps:
       - name: Check out code
         uses: actions/checkout@v4