diff --git a/MFlow.cabal b/MFlow.cabal
--- a/MFlow.cabal
+++ b/MFlow.cabal
@@ -2,17 +2,20 @@
 synopsis:  (Web) application server. Stateful server processes. Simple, statically correct widget combinators.
 
 
-version: 0.0.1
+version: 0.0.2
 cabal-version: -any
 build-type: Simple
 license: BSD3
 license-file: LICENSE
 copyright:
 maintainer: agocorona@gmail.com
-build-depends: Workflow ==0.5.8.2, transformers -any, mtl -any,
+build-depends: Workflow >=0.6.0.0 && < 0.6.1, transformers -any, mtl -any,
                extensible-exceptions -any, xhtml -any, base > 4.4 && < 4.6,
                hack -any, hack-handler-simpleserver -any, bytestring -any,
-               containers -any, RefSerialize == 0.2.8, TCache == 0.9.0.1, stm >2,
+               containers -any
+               , RefSerialize >= 0.2.8.1 && < 0.2.9
+               , TCache >= 0.9.0.2 && < 0.9.1
+               , stm >2,
                old-time -any,
                vector -any
 stability: experimental
@@ -115,7 +118,7 @@
 
 ghc-prof-options:
 ghc-shared-options:
-ghc-options: -O2
+ghc-options:
 hugs-options:
 nhc98-options:
 jhc-options: