diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 876414d..b1fe839 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -32,6 +32,7 @@ jobs:
         java_major:
           - 11
           - 17
+          - 21
         jdist:
           - jre
         exclude: