diff --git a/Stackage/Config.hs b/Stackage/Config.hs
index 6d09cd43..67e806a7 100644
--- a/Stackage/Config.hs
+++ b/Stackage/Config.hs
@@ -107,10 +107,13 @@ defaultStablePackages = unPackageMap $ execWriter $ do
 
     mapM_ (add "Brent Yorgey <byorgey@gmail.com>") $ words =<<
         [ "monoid-extras dual-tree vector-space-points active force-layout"
-        , "diagrams diagrams-contrib diagrams-core diagrams-lib diagrams-svg"
+        , "diagrams-core diagrams-lib diagrams-svg"
         , "diagrams-builder haxr BlogLiterately BlogLiterately-diagrams"
         ]
 
+    -- http://hackage.haskell.org/package/diagrams-contrib
+    -- Temporarily blocked: diagrams diagrams-contrib
+
     mapM_ (add "Patrick Brisbin") $ words "gravatar"
 
     -- https://github.com/fpco/stackage/issues/34