diff --git a/labelme.spec b/labelme.spec
index d68f92566..d67750865 100644
--- a/labelme.spec
+++ b/labelme.spec
@@ -1,6 +1,11 @@
 # -*- mode: python -*-
 # vim: ft=python
 
+import sys
+
+
+sys.setrecursionlimit(5000)  # required on Windows
+
 
 a = Analysis(
     ['labelme/__main__.py'],