diff --git a/reducers.cabal b/reducers.cabal
--- a/reducers.cabal
+++ b/reducers.cabal
@@ -1,6 +1,6 @@
 name:          reducers
 category:      Data, Math, Numerical, Semigroups
-version:       0.1.3
+version:       0.1.4
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -37,7 +37,7 @@
     semigroupoids          >= 1.2.2.4  && < 1.3,
     comonad                >= 1.1.1    && < 1.2,
     pointed                >= 2.0      && < 2.1,
-    keys                   >= 2.0      && < 2.1
+    keys                   >= 2.1      && < 2.2
 
   exposed-modules:
     Data.Generator