diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.0.1.4
+
+- Added support for GHC `9.12`.
+
 # 0.0.1.3
 
 - Added support for GHC `9.10`.
diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright © 2022–2024 Jonathan Knowles
+   Copyright © 2022–2025 Jonathan Knowles
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
diff --git a/quickcheck-groups.cabal b/quickcheck-groups.cabal
--- a/quickcheck-groups.cabal
+++ b/quickcheck-groups.cabal
@@ -1,12 +1,12 @@
 cabal-version:  3.0
 name:           quickcheck-groups
-version:        0.0.1.3
+version:        0.0.1.4
 bug-reports:    https://github.com/jonathanknowles/quickcheck-groups/issues
 license:        Apache-2.0
 license-file:   LICENSE
 author:         Jonathan Knowles
 maintainer:     mail@jonathanknowles.net
-copyright:      2022–2024 Jonathan Knowles
+copyright:      2022–2025 Jonathan Knowles
 category:       Testing
 synopsis:       Testing group class instances with QuickCheck
 description:
@@ -19,7 +19,7 @@
     README.md
 
 common dependency-base
-    build-depends:base                          >= 4.14.3.0   && < 4.21
+    build-depends:base                          >= 4.14.3.0   && < 4.22
 common dependency-hspec
     build-depends:hspec                         >= 2.10.7     && < 2.12
 common dependency-groups
diff --git a/src/internal/Internal.hs b/src/internal/Internal.hs
--- a/src/internal/Internal.hs
+++ b/src/internal/Internal.hs
@@ -1,5 +1,5 @@
 -- |
--- Copyright: © 2022–2024 Jonathan Knowles
+-- Copyright: © 2022–2025 Jonathan Knowles
 -- License: Apache-2.0
 --
 module Internal
diff --git a/src/internal/Internal/Semigroup/Eq.hs b/src/internal/Internal/Semigroup/Eq.hs
--- a/src/internal/Internal/Semigroup/Eq.hs
+++ b/src/internal/Internal/Semigroup/Eq.hs
@@ -1,5 +1,5 @@
 -- |
--- Copyright: © 2022–2024 Jonathan Knowles
+-- Copyright: © 2022–2025 Jonathan Knowles
 -- License: Apache-2.0
 --
 module Internal.Semigroup.Eq
diff --git a/src/internal/Internal/Semigroup/Tuple.hs b/src/internal/Internal/Semigroup/Tuple.hs
--- a/src/internal/Internal/Semigroup/Tuple.hs
+++ b/src/internal/Internal/Semigroup/Tuple.hs
@@ -3,7 +3,7 @@
 {- HLINT ignore "Redundant bracket" -}
 
 -- |
--- Copyright: © 2022–2024 Jonathan Knowles
+-- Copyright: © 2022–2025 Jonathan Knowles
 -- License: Apache-2.0
 --
 module Internal.Semigroup.Tuple
diff --git a/src/prelude/Internal/Prelude.hs b/src/prelude/Internal/Prelude.hs
--- a/src/prelude/Internal/Prelude.hs
+++ b/src/prelude/Internal/Prelude.hs
@@ -1,5 +1,5 @@
 -- |
--- Copyright: © 2022–2024 Jonathan Knowles
+-- Copyright: © 2022–2025 Jonathan Knowles
 -- License: Apache-2.0
 --
 module Internal.Prelude
diff --git a/src/public/Test/QuickCheck/Classes/Group.hs b/src/public/Test/QuickCheck/Classes/Group.hs
--- a/src/public/Test/QuickCheck/Classes/Group.hs
+++ b/src/public/Test/QuickCheck/Classes/Group.hs
@@ -2,7 +2,7 @@
 {- HLINT ignore "Redundant bracket" -}
 
 -- |
--- Copyright: © 2022–2024 Jonathan Knowles
+-- Copyright: © 2022–2025 Jonathan Knowles
 -- License: Apache-2.0
 --
 -- This module provides 'Laws' definitions for classes exported by
diff --git a/src/test/ClassSpec.hs b/src/test/ClassSpec.hs
--- a/src/test/ClassSpec.hs
+++ b/src/test/ClassSpec.hs
@@ -2,7 +2,7 @@
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 
 -- |
--- Copyright: © 2022–2024 Jonathan Knowles
+-- Copyright: © 2022–2025 Jonathan Knowles
 -- License: Apache-2.0
 --
 module ClassSpec where
diff --git a/src/test/Test/Hspec/Laws.hs b/src/test/Test/Hspec/Laws.hs
--- a/src/test/Test/Hspec/Laws.hs
+++ b/src/test/Test/Hspec/Laws.hs
@@ -1,5 +1,5 @@
 -- |
--- Copyright: © 2022–2024 Jonathan Knowles
+-- Copyright: © 2022–2025 Jonathan Knowles
 -- License: Apache-2.0
 --
 -- Provides testing functions to check that type class instances obey laws.