diff --git a/.appveyor.yml b/.appveyor.yml
index 9d54e02f..930f591a 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -28,6 +28,7 @@ cache:
   - '%R_LIBS_USER%'
 
 build_script:
+  - set PATH=C:\Program Files\Git\mingw64\bin;%PATH%
   - sh ./script/cibuild
 
 test: off