diff --git a/python/requirements.txt b/python/requirements.txt
index 2a7c0437183d..58726e8f5caa 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -14,4 +14,4 @@ pyflakes == 0.8.0
 # For test-webidl
 ply == 3.8
 
-servo_tidy == 0.0.1
+-e python/tidy