diff --git a/appveyor.yml b/appveyor.yml
index a04e1904..845307f6 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -6,7 +6,7 @@ environment:
 
 install:
   - cmd: git submodule update --init --recursive
-  - cmd: SET PATH=%PATH%;C:\Python27\Scripts
+  - cmd: SET PATH=%PATH%;C:\Python27\Scripts;C:\MinGW\bin
   - cmd: pip install tox
 
 test_script: