diff --git a/comonads-fd.cabal b/comonads-fd.cabal
--- a/comonads-fd.cabal
+++ b/comonads-fd.cabal
@@ -1,6 +1,6 @@
 name:          comonads-fd
 category:      Control, Comonads
-version:       2.0.2
+version:       2.0.2.1
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -23,13 +23,13 @@
     FunctionalDependencies
     FlexibleInstances
     UndecidableInstances
-  build-depends: 
+  build-depends:
     base                 >= 4       && < 5,
     transformers         >= 0.2     && < 0.3,
     mtl                  >= 2.0.1.0 && <= 2.1,
     semigroups           >= 0.8     && < 0.9,
     comonad              >= 1.1.1.1 && < 1.2,
-    comonad-transformers >= 2.0     && < 2.1
+    comonad-transformers >= 2.0.3   && < 2.1
 
   exposed-modules:
     Control.Comonad.Env
@@ -46,5 +46,5 @@
     Control.Comonad.Traced.Class
     Control.Comonad.Traced.Memo
 
-  ghc-options:      -Wall 
+  ghc-options:      -Wall