diff --git a/scripts/smoke-test-paper.sh b/scripts/smoke-test-paper.sh
index e2033e6..08be645 100644
--- a/scripts/smoke-test-paper.sh
+++ b/scripts/smoke-test-paper.sh
@@ -16,6 +16,15 @@ plugin_version="${plugin_version%.jar}"
 cleanup() {
   if [[ -n "$server_pid" ]] && kill -0 "$server_pid" 2>/dev/null; then
     kill -TERM "$server_pid" 2>/dev/null || true
+    for _ in $(seq 1 10); do
+      if ! kill -0 "$server_pid" 2>/dev/null; then
+        break
+      fi
+      sleep 1
+    done
+    if kill -0 "$server_pid" 2>/dev/null; then
+      kill -KILL "$server_pid" 2>/dev/null || true
+    fi
     wait "$server_pid" 2>/dev/null || true
   fi
   for _ in 1 2 3; do