diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d1c81dd4..078c323b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        java: [ '9', '11', '17' ]
+        java: [ '11', '17' ]
     steps:
     - uses: actions/checkout@v2
     - name: Set up JDK