diff --git a/either.cabal b/either.cabal
--- a/either.cabal
+++ b/either.cabal
@@ -1,6 +1,6 @@
 name:          either
 category:      Control, Monads
-version:       4.3.0.2
+version:       4.3.1
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -31,7 +31,7 @@
     exceptions        >= 0.5     && < 0.7,
     free              >= 4.9     && < 5,
     monad-control     >= 0.3.2   && < 0.4,
-    MonadRandom       >= 0.1     && < 0.3,
+    MonadRandom       >= 0.1     && < 0.4,
     mtl               >= 2.0     && < 2.3,
     semigroups        >= 0.8.3.1 && < 1,
     semigroupoids     >= 4       && < 5,