diff --git a/Stackage/Config.hs b/Stackage/Config.hs
index a2bf9093..a629061b 100644
--- a/Stackage/Config.hs
+++ b/Stackage/Config.hs
@@ -334,6 +334,9 @@ defaultStablePackages ghcVer = unPackageMap $ execWriter $ do
     addRange "Michael Snoyman" "hint" "< 0.4"
     addRange "Michael Snoyman" "ghc-mtl" "< 1.1"
 
+    -- https://github.com/fpco/stackage/issues/193
+    addRange "Michael Snoyman" "MFlow" "< 0.4"
+
     -- Requires aeson 0.6.*
     addRange "Michael Snoyman" "threepenny-gui" "< 0.4.1"