diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # ChangeLog for time-manager
 
+## 0.1.1
+
+* Removing `unliftio`.
+
 ## 0.1.0
 
 * [#986](https://github.com/yesodweb/wai/pull/986)
diff --git a/System/TimeManager.hs b/System/TimeManager.hs
--- a/System/TimeManager.hs
+++ b/System/TimeManager.hs
@@ -1,5 +1,5 @@
-{-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE DeriveDataTypeable #-}
 
 module System.TimeManager (
     -- ** Types
@@ -29,11 +29,11 @@
 ) where
 
 import Control.Concurrent (myThreadId)
+import qualified Control.Exception as E
 import Control.Reaper
 import Data.IORef (IORef)
 import qualified Data.IORef as I
 import Data.Typeable (Typeable)
-import qualified UnliftIO.Exception as E
 
 ----------------------------------------------------------------
 
@@ -61,6 +61,7 @@
         defaultReaperSettings
             { reaperAction = mkListAction prune
             , reaperDelay = timeout
+            , reaperThreadName = "WAI timeout manager (Reaper)"
             }
   where
     prune m@(Handle _ actionRef stateRef) = do
@@ -143,7 +144,7 @@
         | stateRef == stateRef' =
             hs
         | otherwise =
-            let !hs'= filt hs
+            let !hs' = filt hs
              in h : hs'
 
 -- | Setting the state to paused.
diff --git a/time-manager.cabal b/time-manager.cabal
--- a/time-manager.cabal
+++ b/time-manager.cabal
@@ -1,5 +1,5 @@
 Name:                time-manager
-Version:             0.1.0
+Version:             0.1.1
 Synopsis:            Scalable timer
 License:             MIT
 License-file:        LICENSE
@@ -16,7 +16,6 @@
 Library
   Build-Depends:     base                      >= 4.12       && < 5
                    , auto-update               >= 0.2        && < 0.3
-                   , unliftio
   Default-Language:  Haskell2010
   Exposed-modules:   System.TimeManager
   Ghc-Options:       -Wall