diff --git a/dot_gitconfig b/dot_gitconfig
index b305725..70b93ee 100644
--- a/dot_gitconfig
+++ b/dot_gitconfig
@@ -19,3 +19,5 @@
 	helper = /usr/local/share/gcm-core/git-credential-manager
 [credential "https://dev.azure.com"]
 	useHttpPath = true
+[diff]
+    external = difft