diff --git a/Stackage/Config.hs b/Stackage/Config.hs
index c5531af5..47bacbaa 100644
--- a/Stackage/Config.hs
+++ b/Stackage/Config.hs
@@ -181,6 +181,9 @@ defaultExpectedFailures ghcVer = execWriter $ do
     -- No AWS creds available
     add "aws"
 
+    -- Not sure why...
+    add "singletons"
+
   where
     add = tell . singleton . PackageName