diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Revision history for wild-bind-x11
 
+## 0.2.0.9  -- 2019-12-30
+
+* Confirm test with `base-4.13.0.0`
+
 ## 0.2.0.8  -- 2019-10-04
 
 * Confirm test with `time-1.9.3`.
diff --git a/wild-bind-x11.cabal b/wild-bind-x11.cabal
--- a/wild-bind-x11.cabal
+++ b/wild-bind-x11.cabal
@@ -1,5 +1,5 @@
 name:                   wild-bind-x11
-version:                0.2.0.8
+version:                0.2.0.9
 author:                 Toshio Ito <debug.ito@gmail.com>
 maintainer:             Toshio Ito <debug.ito@gmail.com>
 license:                BSD3
@@ -28,7 +28,7 @@
                         WildBind.X11.Internal.NotificationDebouncer
   other-modules:        WildBind.X11.Internal.FrontEnd,
                         WildBind.X11.Internal.GrabMan
-  build-depends:        base >=4.6 && <4.13,
+  build-depends:        base >=4.6 && <4.14,
                         wild-bind >=0.1.0 && <0.2,
                         text >=1.2.0 && <1.3,
                         X11 >=1.6.1 && <1.10,