diff --git a/tests/wpt/harness/requirements_servo.txt b/tests/wpt/harness/requirements_servo.txt
index d6cd28a8f52..903c07f1b73 100644
--- a/tests/wpt/harness/requirements_servo.txt
+++ b/tests/wpt/harness/requirements_servo.txt
@@ -1,3 +1,2 @@
 mozprocess >= 0.19
-Mako >= 1.0.4