diff --git a/scwx-qt/source/scwx/qt/manager/timeline_manager.cpp b/scwx-qt/source/scwx/qt/manager/timeline_manager.cpp
index 46e827ea..c4b9f2e3 100644
--- a/scwx-qt/source/scwx/qt/manager/timeline_manager.cpp
+++ b/scwx-qt/source/scwx/qt/manager/timeline_manager.cpp
@@ -55,6 +55,9 @@ public:
       animationTimer_.cancel();
       animationTimerLock.unlock();
 
+      selectThreadPool_.stop();
+      playThreadPool_.stop();
+
       selectThreadPool_.join();
       playThreadPool_.join();
    }