diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -2,6 +2,12 @@
 
 ## Unreleased changes
 
+## 2.2.2
+
+- Update `discord-haskell` dependency to 1.12.0
+- Bump copyright to 2022
+- Fix incomplete pattern match crash in the example bot when using `bot --bash-completion-script`
+
 ## 2.2.1
 
 - Patch README having incorrect non-published details after Hackage publication.
diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2021 Yuto Takano
+Copyright (c) 2021-2022 Yuto Takano
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # discord-haskell-voice
 
 ![hackage version](https://img.shields.io/hackage/v/discord-haskell-voice?color=%235e5184)
-![discord-haskell version dependency](https://img.shields.io/badge/discord--haskell%20ver.-1.11.0-lightblue)
+![discord-haskell version dependency](https://img.shields.io/badge/discord--haskell%20ver.-1.12.0-lightblue)
 
 Welcome to `discord-haskell-voice`! This library provides you with a high-level
 interface for interacting with Discord's Voice API, building on top of the
@@ -84,8 +84,8 @@
 # --- myproject.cabal <truncated>
  build-depends:
       base >=4.7 && <5
-    , discord-haskell ==1.11.0
-    , discord-haskell-voice ==2.2.1
+    , discord-haskell ==1.12.0
+    , discord-haskell-voice ==2.2.2
 ```
 
 ### Stack
@@ -95,16 +95,16 @@
 ```
 # --- stack.yaml <truncated>
 extra-deps:
-- discord-haskell-1.11.0
-- discord-haskell-voice-2.2.1
+- discord-haskell-1.12.0
+- discord-haskell-voice-2.2.2
 ```
 
 ```
 # --- package.yaml <truncated>
 dependencies:
 - base >= 4.7 && < 5
-- discord-haskell == 1.11.0
-- discord-haskell-voice == 2.2.1
+- discord-haskell == 1.12.0
+- discord-haskell-voice == 2.2.2
 ```
 
 ## Documentation
diff --git a/discord-haskell-voice.cabal b/discord-haskell-voice.cabal
--- a/discord-haskell-voice.cabal
+++ b/discord-haskell-voice.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           discord-haskell-voice
-version:        2.2.1
+version:        2.2.2
 synopsis:       Voice support for discord-haskell.
 description:    Supplementary library to discord-haskell. See the project README on GitHub for more information. <https://github.com/yutotakano/discord-haskell-voice>
 category:       Network
@@ -13,7 +13,7 @@
 bug-reports:    https://github.com/yutotakano/discord-haskell-voice/issues
 author:         Yuto Takano
 maintainer:     moa17stock@gmail.com
-copyright:      2021 Yuto Takano
+copyright:      2021-2022 Yuto Takano
 license:        MIT
 license-file:   LICENSE
 build-type:     Simple
@@ -50,7 +50,7 @@
     , binary ==0.8.*
     , bytestring >=0.10.12.0 && <0.11
     , conduit ==1.3.4.1
-    , discord-haskell ==1.11.0
+    , discord-haskell ==1.12.0
     , lens >=4.19.2 && <5
     , mtl ==2.2.2
     , network >=3.1.1.1 && <3.2
@@ -80,7 +80,7 @@
     , binary ==0.8.*
     , bytestring >=0.10.12.0 && <0.11
     , conduit ==1.3.4.1
-    , discord-haskell ==1.11.0
+    , discord-haskell ==1.12.0
     , discord-haskell-voice
     , lens >=4.19.2 && <5
     , mtl ==2.2.2
@@ -114,7 +114,7 @@
     , binary ==0.8.*
     , bytestring >=0.10.12.0 && <0.11
     , conduit ==1.3.4.1
-    , discord-haskell ==1.11.0
+    , discord-haskell ==1.12.0
     , discord-haskell-voice
     , lens >=4.19.2 && <5
     , mtl ==2.2.2
diff --git a/examples/BasicMusicBot.hs b/examples/BasicMusicBot.hs
--- a/examples/BasicMusicBot.hs
+++ b/examples/BasicMusicBot.hs
@@ -85,6 +85,7 @@
                 Failure failure ->
                     void $ restCall $ R.CreateMessage (messageChannelId msg) $ T.pack $
                         fst $ renderFailure failure "bot"
+                _ -> pure ()
             _ -> pure ()
 eventHandler _ _ = pure ()