diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index fa570d69..902c2dcb 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/setup-java@v2
         with:
           distribution: 'adopt'
-          java-version: '9'
+          java-version: '11'
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}