diff --git a/BroadcastChan/Conduit.hs b/BroadcastChan/Conduit.hs
--- a/BroadcastChan/Conduit.hs
+++ b/BroadcastChan/Conduit.hs
@@ -2,7 +2,7 @@
 -------------------------------------------------------------------------------
 -- |
 -- Module      :  BroadcastChan.Conduit
--- Copyright   :  (C) 2014-2018 Merijn Verstraaten
+-- Copyright   :  (C) 2014-2021 Merijn Verstraaten
 -- License     :  BSD-style (see the file LICENSE)
 -- Maintainer  :  Merijn Verstraaten <merijn@inconsistent.nl>
 -- Stability   :  experimental
diff --git a/BroadcastChan/Conduit/Internal.hs b/BroadcastChan/Conduit/Internal.hs
--- a/BroadcastChan/Conduit/Internal.hs
+++ b/BroadcastChan/Conduit/Internal.hs
@@ -10,7 +10,7 @@
 import Control.Monad.Trans.Class (lift)
 import Control.Monad.IO.Unlift (MonadUnliftIO, UnliftIO(..), askUnliftIO)
 import Data.Acquire (ReleaseType(..), allocateAcquire, mkAcquireType)
-import Data.Conduit
+import Data.Conduit (ConduitM, (.|), awaitForever, yield)
 import qualified Data.Conduit.List as C
 import Data.Foldable (traverse_)
 import Data.Void (Void)
diff --git a/BroadcastChan/Conduit/Throw.hs b/BroadcastChan/Conduit/Throw.hs
--- a/BroadcastChan/Conduit/Throw.hs
+++ b/BroadcastChan/Conduit/Throw.hs
@@ -2,7 +2,7 @@
 -------------------------------------------------------------------------------
 -- |
 -- Module      :  BroadcastChan.Conduit.Throw
--- Copyright   :  (C) 2014-2018 Merijn Verstraaten
+-- Copyright   :  (C) 2014-2021 Merijn Verstraaten
 -- License     :  BSD-style (see the file LICENSE)
 -- Maintainer  :  Merijn Verstraaten <merijn@inconsistent.nl>
 -- Stability   :  experimental
diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+0.2.1.2 [2021.12.01]
+--------------------
+* Updated bounds for GHC 9.0 and 9.2.
+* Tighten bound on broadcast-chan to only use version with fixed race
+  condition.
+
 0.2.1.1 [2020.03.05]
 --------------------
 * Updated imports to support `unliftio-core` 0.2.x
diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2013-2017, Merijn Verstraaten
+Copyright (c) 2013-2021, Merijn Verstraaten
 
 All rights reserved.
 
diff --git a/broadcast-chan-conduit.cabal b/broadcast-chan-conduit.cabal
--- a/broadcast-chan-conduit.cabal
+++ b/broadcast-chan-conduit.cabal
@@ -1,21 +1,21 @@
+Cabal-Version:      2.2
 Name:               broadcast-chan-conduit
-Version:            0.2.1.1
+Version:            0.2.1.2
 
 Homepage:           https://github.com/merijn/broadcast-chan
 Bug-Reports:        https://github.com/merijn/broadcast-chan/issues
 
 Author:             Merijn Verstraaten
 Maintainer:         Merijn Verstraaten <merijn@inconsistent.nl>
-Copyright:          Copyright © 2014-2019 Merijn Verstraaten
+Copyright:          Copyright © 2014-2021 Merijn Verstraaten
 
-License:            BSD3
+License:            BSD-3-Clause
 License-File:       LICENSE
 
 Category:           System
-Cabal-Version:      >= 1.10
 Build-Type:         Simple
 Tested-With:        GHC == 8.0.2, GHC == 8.2.2, GHC == 8.4.4, GHC == 8.6.5,
-                    GHC == 8.8.3, GHC == 8.10.1
+                    GHC == 8.8.4, GHC == 8.10.7, GHC == 9.0.1, GHC == 9.2.1
 
 Extra-Source-Files: CHANGELOG.md
 
@@ -28,7 +28,7 @@
 
 Library
   Default-Language:     Haskell2010
-  GHC-Options:          -Wall -O2 -fno-warn-unused-do-bind
+  GHC-Options:          -Wall -O2 -Wno-unused-do-bind
   Exposed-Modules:      BroadcastChan.Conduit
                         BroadcastChan.Conduit.Throw
   Other-Modules:        BroadcastChan.Conduit.Internal
@@ -38,18 +38,18 @@
                         ScopedTypeVariables
                         Trustworthy
 
-  Build-Depends:        base >= 4.7 && < 4.15
-               ,        broadcast-chan == 0.2.1.*
+  Build-Depends:        base >= 4.8 && < 4.17
+               ,        broadcast-chan == 0.2.1.2
                ,        conduit >= 1.2 && < 1.4
                ,        resourcet >= 1.1 && < 1.3
-               ,        transformers >= 0.2 && < 0.6
+               ,        transformers >= 0.2 && < 0.7
                ,        unliftio-core >= 0.1 && < 0.3
 
 Test-Suite conduit
   Default-Language:     Haskell2010
   Type:                 exitcode-stdio-1.0
   Main-Is:              ConduitTest.hs
-  GHC-Options:          -Wall -fno-warn-unused-do-bind -threaded
+  GHC-Options:          -Wall -Wno-unused-do-bind -threaded -with-rtsopts=-qg
   Hs-Source-Dirs:       tests
 
   Build-Depends:        base