diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 4.0.3 (2021-02-23)
+
+#### Changed
+
+- Support for GHC 9.
+
 ## 4.0.2 (2021-01-23)
 
 #### Fixed
diff --git a/versions.cabal b/versions.cabal
--- a/versions.cabal
+++ b/versions.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.2
 name:               versions
-version:            4.0.2
+version:            4.0.3
 synopsis:           Types and parsers for software version numbers.
 description:
   A library for parsing and comparing software version numbers. We like to give
@@ -38,7 +38,7 @@
     -Wincomplete-uni-patterns
 
   build-depends:
-    , base        >=4.10 && <4.15
+    , base        >=4.10 && <4.16
     , megaparsec  >=7
     , text        >=1.2