diff --git a/xtest/sdk/java/cli.sh b/xtest/sdk/java/cli.sh
index 6457ed36..97f92ea5 100755
--- a/xtest/sdk/java/cli.sh
+++ b/xtest/sdk/java/cli.sh
@@ -91,7 +91,12 @@ if [ "$1" == "supports" ]; then
       java -jar "$SCRIPT_DIR"/cmdline.jar help encrypt | grep with-target-mode
       exit $?
       ;;
-
+    mechanism-rsa-4096)
+       # rsa4096 support in > 0.12.0
+      set -o pipefail
+      java -jar "$SCRIPT_DIR"/cmdline.jar --version | jq -re .version | awk -F. '{ if ($1 > 0 || ($1 == 0 && $2 >= 13) || ($1 == 0 && $2 == 12 && $3 >= 1)) exit 0; else exit 1; }'
+      exit $?
+      ;;
     *)
       echo "Unknown feature: $2"
       exit 2
diff --git a/xtest/tdfs.py b/xtest/tdfs.py
index 09227ed0..f16c0c8b 100644
--- a/xtest/tdfs.py
+++ b/xtest/tdfs.py
@@ -459,8 +459,6 @@ def _uncached_supports(self, feature: feature_type) -> bool:
                 return True
             case ("mechanism-rsa-4096", "go"):
                 return True
-            case ("mechanism-rsa-4096", "java"):
-                return False
             case ("mechanism-ec-curves-384-521", "go"):
                 return True
             case ("mechanism-ec-curves-384-521", ("java" | "js")):