diff --git a/setup.py b/setup.py
index 4aaf0b7b1..5008f9ce3 100644
--- a/setup.py
+++ b/setup.py
@@ -75,7 +75,7 @@ install_requires = [
     "win-unicode-console>=0.5; sys_platform == 'win32'",
     "pywin32>=225; sys_platform == 'win32'",
     "networkx>=2.1,<2.4",
-    "speedcopy>=2",
+    "speedcopy @ git+https://github.com/rxxg/speedcopy@5",
 ]