diff --git a/Lambdabot/Serial.hs b/Lambdabot/Serial.hs
--- a/Lambdabot/Serial.hs
+++ b/Lambdabot/Serial.hs
@@ -65,7 +65,7 @@
 gzip   = P.concat . toChunks . compress . fromChunks . (:[])
 
 gunzip :: ByteString -> ByteString
-gunzip = P.concat . toChunks . decompress .fromChunks . (:[])
+gunzip = P.concat . toChunks . decompress . fromChunks . (:[])
 #endif
 
 --
@@ -128,7 +128,6 @@
                 readKV (k:rest) = let (vs, rest') = break (== P.empty) rest
                                   in  (k,vs) : readKV (drop 1 rest')
 
-
         showPacked m = gzip
                      . P.unlines
                      . concatMap (\(k,vs) -> k : vs ++ [P.empty]) $ M.toList m
@@ -173,7 +172,7 @@
 mapListPackedSerial = Serial (Just . showPacked) (Just . readPacked)
 
 -- And for association list
-assocListPackedSerial   :: Serial ([(ByteString,ByteString)])
+assocListPackedSerial :: Serial ([(ByteString,ByteString)])
 assocListPackedSerial = Serial (Just . showPacked) (Just . readPacked)
 
 ------------------------------------------------------------------------
diff --git a/Lambdabot/Signals.hs b/Lambdabot/Signals.hs
--- a/Lambdabot/Signals.hs
+++ b/Lambdabot/Signals.hs
@@ -29,7 +29,7 @@
 
 import Data.Typeable
 
-import Control.Concurrent
+import Control.Concurrent (myThreadId, newEmptyMVar, putMVar, MVar, ThreadId)
 import Control.Exception
 import Control.Monad.Error
 
diff --git a/lambdabot-utils.cabal b/lambdabot-utils.cabal
--- a/lambdabot-utils.cabal
+++ b/lambdabot-utils.cabal
@@ -1,5 +1,5 @@
 Name:                lambdabot-utils
-Version:             4.1
+Version:             4.2
 License:             GPL
 License-file:        LICENSE
 Author:              Don Stewart