diff --git a/test/test_integration_pending.rb b/test/test_integration_pending.rb
index 8d83e958..4c2ac735 100644
--- a/test/test_integration_pending.rb
+++ b/test/test_integration_pending.rb
@@ -160,6 +160,7 @@ def test_busy_timeout
           sync.send_to_main :ready
           busy.lock
         end
+        sync.send_to_main :done
       ensure
         db2&.close
       end
@@ -173,9 +174,10 @@ def test_busy_timeout
       end
       t1sync.send_to_thread :end
 
-      assert_operator(count, *test_case[:expected_count])
-
       busy.unlock
+      t2sync.wait_for_thread :done
+
+      assert_operator(count, *test_case[:expected_count])
     ensure
       active_thread&.join
       blocking_thread&.join