diff --git a/groupoids.cabal b/groupoids.cabal
--- a/groupoids.cabal
+++ b/groupoids.cabal
@@ -1,6 +1,6 @@
 name:          groupoids
 category:      Control, Categories
-version:       0.2.1.2
+version:       3.0
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -13,6 +13,7 @@
 synopsis:      Haskell 98 Groupoids
 description:   Haskell 98 Groupoids
 build-type:    Simple
+
 extra-source-files: .travis.yml
 
 source-repository head
@@ -21,8 +22,8 @@
 
 library
   build-depends:
-    base >= 4 && < 5,
-    semigroupoids >= 1.3.1.2 && <= 1.4
+    base          >= 4   && < 5,
+    semigroupoids >= 3.0 && <= 3.1
 
   exposed-modules:
     Data.Groupoid