diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Revision history for wild-bind-task-x11
 
+## 0.2.0.5  -- 2025-03-19
+
+* Confirm test with `ghc-9.12.1`.
+
 ## 0.2.0.4  -- 2024-09-25
 
 * Update the dependency version bounds, generated by cabal-plan-bounds and GitHub Workflow.
diff --git a/wild-bind-task-x11.cabal b/wild-bind-task-x11.cabal
--- a/wild-bind-task-x11.cabal
+++ b/wild-bind-task-x11.cabal
@@ -1,5 +1,5 @@
 name:                   wild-bind-task-x11
-version:                0.2.0.4
+version:                0.2.0.5
 author:                 Toshio Ito <debug.ito@gmail.com>
 maintainer:             Toshio Ito <debug.ito@gmail.com>
 license:                BSD3
@@ -20,7 +20,7 @@
   exposed-modules:      WildBind.Task.X11,
                         WildBind.Task.X11.Seq.Example
   -- other-modules:
-  build-depends:        base ^>=4.14.3 || ^>=4.15.0 || ^>=4.16.0 || ^>=4.17.0 || ^>=4.18.0 || ^>=4.19.0 || ^>=4.20.0,
+  build-depends:        base ^>=4.14.3 || ^>=4.15.0 || ^>=4.16.0 || ^>=4.17.0 || ^>=4.18.0 || ^>=4.19.0 || ^>=4.20.0 || ^>=4.21.0,
                         wild-bind ^>=0.1.2,
                         wild-bind-x11 ^>=0.2.0,
                         wild-bind-indicator ^>=1.0.0,
@@ -44,7 +44,7 @@
   main-is:              ImportTest.hs
   -- default-extensions:   
   -- other-modules:        
-  build-depends:        base ^>=4.14.3 || ^>=4.15.0 || ^>=4.16.0 || ^>=4.17.0 || ^>=4.18.0 || ^>=4.19.0 || ^>=4.20.0,
+  build-depends:        base ^>=4.14.3 || ^>=4.15.0 || ^>=4.16.0 || ^>=4.17.0 || ^>=4.18.0 || ^>=4.19.0 || ^>=4.20.0 || ^>=4.21.0,
                         wild-bind-task-x11
 
 source-repository head
