diff --git a/gingersnap.cabal b/gingersnap.cabal
--- a/gingersnap.cabal
+++ b/gingersnap.cabal
@@ -1,5 +1,5 @@
 name:                gingersnap
-version:             0.2.1.1
+version:             0.2.1.2
 synopsis:            snap-core + aeson + postgresql-simple = delicious
 description:
   JSON API idioms for snap-core, preventing DB connection leaks.
@@ -35,6 +35,8 @@
     , resource-pool
     , snap-core
     , text
+    -- Needed for Control.Monad.IO.Class for GHC 7. Remove later?:
+    , transformers
     , unordered-containers
   hs-source-dirs:      src
   default-language:    Haskell2010