diff --git a/Stackage/Config.hs b/Stackage/Config.hs
index a086a651..e56fc9f4 100644
--- a/Stackage/Config.hs
+++ b/Stackage/Config.hs
@@ -390,6 +390,7 @@ defaultStablePackages ghcVer requireHP = unPackageMap $ execWriter $ do
 
     -- https://github.com/fpco/stackage/issues/217
     addRange "Michael Snoyman" "transformers" "< 0.4"
+    addRange "Michael Snoyman" "mtl" "< 2.2"
 
     -- Requires too new a version of text
     when (ghcVer == GhcMajorVersion 7 4 && requireHP) $ do