diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,10 @@
 # Revision history for greskell-websocket
 
+## 0.1.1.2  -- 2018-10-03
+
+* Confirm test with `base-4.12.0.0`
+
+
 ## 0.1.1.1  -- 2018-09-23
 
 * Confirm test with `stm-2.5.0.0`.
diff --git a/greskell-websocket.cabal b/greskell-websocket.cabal
--- a/greskell-websocket.cabal
+++ b/greskell-websocket.cabal
@@ -1,5 +1,5 @@
 name:                   greskell-websocket
-version:                0.1.1.1
+version:                0.1.1.2
 author:                 Toshio Ito <debug.ito@gmail.com>
 maintainer:             Toshio Ito <debug.ito@gmail.com>
 license:                BSD3
@@ -43,7 +43,7 @@
                         Network.Greskell.WebSocket.Connection.Type,
                         Network.Greskell.WebSocket.Client.Impl,
                         Network.Greskell.WebSocket.Util
-  build-depends:        base >=4.9.1.0 && <4.12,
+  build-depends:        base >=4.9.1.0 && <4.13,
                         greskell-core >=0.1.2.0 && <0.2,
                         bytestring >=0.10.8.1 && <0.11,
                         base64-bytestring >=1.0.0.1 && <1.1,