diff --git a/Data/Functor/Yoneda.hs b/Data/Functor/Yoneda.hs
--- a/Data/Functor/Yoneda.hs
+++ b/Data/Functor/Yoneda.hs
@@ -33,7 +33,6 @@
 import Data.Functor.Adjunction
 import Data.Functor.Representable
 import Data.Key
--- import Data.Semigroup
 import Data.Semigroup.Foldable
 import Data.Semigroup.Traversable
 import Data.Traversable
diff --git a/kan-extensions.cabal b/kan-extensions.cabal
--- a/kan-extensions.cabal
+++ b/kan-extensions.cabal
@@ -1,6 +1,6 @@
 name:          kan-extensions
 category:      Data Structures, Monads, Comonads, Functors
-version:       2.0.1
+version:       2.0.2
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -31,12 +31,10 @@
   build-depends: 
     array                  >= 0.3.0.2 && < 0.4,
     base                   >= 4       && < 5,
-    comonad                >= 1.1.1   && < 1.2,
+    comonad                >= 1.1.1.1 && < 1.2,
     containers             >= 0.4     && < 0.5,
     transformers           >= 0.2     && < 0.3,
     mtl                    >= 2.0.1.0 && < 2.1,
-
-    semigroups             >= 0.7.1   && < 0.8,
     semigroupoids          >= 1.2.4   && < 1.3,
     contravariant          >= 0.1.2   && < 0.2,
     distributive           >= 0.2     && < 0.3,