diff --git a/requirements.txt b/requirements.txt
index d623eec..55c57c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-PyInstaller==3.5
+PyInstaller==3.4
 pyuipc==0.4
 pywin32==224
 pywin32-ctypes==0.2.0