diff --git a/sized-vector.cabal b/sized-vector.cabal
--- a/sized-vector.cabal
+++ b/sized-vector.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                sized-vector
-version:             1.3.1.0
+version:             1.3.1.1
 synopsis:            Size-parameterized vector types and functions.
 description:         Size-parameterized vector types and functions using a data-type promotion.
 homepage:            https://github.com/konn/sized-vector
@@ -23,7 +23,7 @@
   exposed-modules:     Data.Vector.Sized
   build-depends:       base                     >= 2.0          && < 5
                ,       singletons               == 0.8.*
-               ,       type-natural             >= 0.1          && < 0.2
+               ,       type-natural             >= 0.1          && < 0.3
                ,       constraints
                ,       monomorphic              == 0.0.*
                ,       equational-reasoning     >= 0.0.3        && < 0.1