diff --git a/Stackage/Config.hs b/Stackage/Config.hs
index 8624a19e..1d7a5d0e 100644
--- a/Stackage/Config.hs
+++ b/Stackage/Config.hs
@@ -516,6 +516,9 @@ defaultStablePackages ghcVer requireHP = unPackageMap $ execWriter $ do
     addRange "Michael Snoyman" "derive" "< 2.5.17"
     addRange "Michael Snoyman" "hoogle" "< 4.2.35"
 
+    -- Force a specific version that's compatible with transformers 0.3
+    addRange "Michael Snoyman" "transformers-compat" "== 0.3.3.3"
+
     when (ghcVer == GhcMajorVersion 7 8 && requireHP) $ do
         -- Yay workarounds for unnecessarily old versions
         let peg x y = addRange "Haskell Platform" x y