diff --git a/modules/zuul/manifests/init.pp b/modules/zuul/manifests/init.pp
index b61e799e18..0fe4a7d7d8 100644
--- a/modules/zuul/manifests/init.pp
+++ b/modules/zuul/manifests/init.pp
@@ -50,6 +50,7 @@ class zuul (
   include pip
 
   $packages = [
+    'gcc',  # yappi requires this to build
     'python-webob',
     'python-lockfile',
     'python-paste',