diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 29343d83..562e8ca8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ '8', '11', '17' ]
+        java: [ '8', '11', '17', '20' ]
     permissions:
       contents: read
       packages: write