diff --git a/requirements/build.txt b/requirements/build.txt
index a2dcc2a..99ffcda 100644
--- a/requirements/build.txt
+++ b/requirements/build.txt
@@ -4,4 +4,4 @@
 
 pip==18.1
 setuptools==36.8.0; python_version < '2.7'  # pyup: ignore
-setuptools==40.6.2; python_version > '2.7'
+setuptools==40.6.3; python_version > '2.7'