diff --git a/semiring-num.cabal b/semiring-num.cabal
--- a/semiring-num.cabal
+++ b/semiring-num.cabal
@@ -1,5 +1,5 @@
 name:                semiring-num
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            Basic semiring class and instances
 description:         Adds a basic semiring class
 homepage:            https://github.com/oisdk/semiring-num
@@ -17,7 +17,7 @@
   exposed-modules:     Data.Semiring
                      , Data.Semiring.Numeric
                      , Test.Semiring
-  build-depends:       base >= 4.7 && < 5
+  build-depends:       base >= 4.9 && < 5
                      , containers >= 0.5
                      , QuickCheck >= 2.8
                      , random >= 1.1
@@ -28,7 +28,7 @@
   type:                exitcode-stdio-1.0
   hs-source-dirs:      test
   main-is:             Spec.hs
-  build-depends:       base
+  build-depends:       base >= 4.9 && < 5
                      , semiring-num
                      , QuickCheck >= 2.8
                      , doctest >= 0.11