diff --git a/snaplet-acid-state.cabal b/snaplet-acid-state.cabal
--- a/snaplet-acid-state.cabal
+++ b/snaplet-acid-state.cabal
@@ -1,5 +1,5 @@
 name:           snaplet-acid-state
-version:        0.2.6.1
+version:        0.2.6.2
 synopsis:       acid-state snaplet for Snap Framework
 description:    This snaplet makes it easy to use acid-state in a Snap
                 application.
@@ -27,8 +27,10 @@
   build-depends:
     acid-state                >= 0.6     && < 0.13,
     base                      >= 4       && < 5,
-    snap                      >= 0.6     && < 0.14,
-    text                      >= 0.11    && < 1.2
+    snap                      >= 0.6     && < 0.14.1,
+    text                      >= 0.11    && < 1.3,
+    transformers              >= 0.3.0.0 && < 0.5,
+    mtl                       >= 2.0     && < 2.3
 
   ghc-options: -Wall -fwarn-tabs -funbox-strict-fields
                -fno-warn-orphans -fno-warn-unused-do-bind
diff --git a/src/Snap/Snaplet/AcidState.hs b/src/Snap/Snaplet/AcidState.hs
--- a/src/Snap/Snaplet/AcidState.hs
+++ b/src/Snap/Snaplet/AcidState.hs
@@ -24,7 +24,8 @@
   , module Data.Acid
   ) where
 
-
+import           Control.Monad.IO.Class
+import           Control.Monad.State.Class
 import qualified Data.Acid as A
 import qualified Data.Acid.Advanced as A
 import qualified Data.Acid.Memory as AM