diff --git a/either.cabal b/either.cabal
--- a/either.cabal
+++ b/either.cabal
@@ -1,6 +1,6 @@
 name:          either
 category:      Control, Monads
-version:       0.2.3
+version:       0.2.3.1
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -19,15 +19,15 @@
 
 library
   build-depends: 
-    base          >= 4 && < 5,
+    base          >= 4       && < 5,
     data-default  >= 0.2.0.1 && < 0.3,
-    semigroups    >= 0.8 && < 0.9,
-    semigroupoids >= 1.2.6 && < 1.3,
-    transformers  >= 0.2.0 && <= 0.3
+    semigroups    >= 0.8     && < 0.9,
+    semigroupoids >= 1.2.6.1 && < 1.3,
+    transformers  >= 0.2.0   && <= 0.3
 
   extensions: CPP
 
   exposed-modules:
     Control.Monad.Trans.Either
 
-  ghc-options:      -Wall 
+  ghc-options:      -Wall