diff --git a/salve.cabal b/salve.cabal
--- a/salve.cabal
+++ b/salve.cabal
@@ -1,7 +1,7 @@
 cabal-version: 2.2
 
 name: salve
-version: 2.0.0.3
+version: 2.0.0.4
 
 synopsis: Semantic version numbers and constraints.
 description:
@@ -25,7 +25,7 @@
 
 common library
   build-depends:
-    , base >= 4.16.0 && < 4.19
+    , base >= 4.16.0 && < 4.20
   default-language: Haskell2010
   ghc-options:
     -Weverything