diff --git a/praglude.cabal b/praglude.cabal
--- a/praglude.cabal
+++ b/praglude.cabal
@@ -1,5 +1,5 @@
 name: praglude
-version: 0.3.0.0
+version: 0.4.0.0
 synopsis: A pragmatic Prelude
 description: An opinionated alternative Prelude, focused on practicality.
 homepage: https://github.com/tdammers/praglude
@@ -31,7 +31,7 @@
                , mtl >=2.2.1 && <2.3
                , random ==1.1.*
                , semigroups >=0.18.2 && <0.19
-               , string-convert >=3.0.1 && <3.1
+               , string-convert >=4.0 && <4.1
                , text >=1.2.2.1 && <1.3
                , time >=1.1 && <2
                , unordered-containers >=0.2.7.1 && <0.3