diff --git a/prometheus-metrics-ghc.cabal b/prometheus-metrics-ghc.cabal
--- a/prometheus-metrics-ghc.cabal
+++ b/prometheus-metrics-ghc.cabal
@@ -1,5 +1,5 @@
 name:                prometheus-metrics-ghc
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:
     Metrics exposing GHC runtime information for use with prometheus-client.
 description:
@@ -24,7 +24,7 @@
   exposed-modules:
       Prometheus.Metric.GHC
   build-depends:
-      base               >=4.6 && <4.8
+      base               >=4.7 && <5
     , prometheus-client
     , utf8-string        >=0.3
   ghc-options: -Wall
@@ -36,6 +36,6 @@
   ghc-options:          -Wall
   main-is:              doctest.hs
   build-depends:
-      base
+      base               >=4.7 && <5
     , doctest
     , prometheus-client