diff --git a/Network/HTTP/Conduit/Manager.hs b/Network/HTTP/Conduit/Manager.hs
--- a/Network/HTTP/Conduit/Manager.hs
+++ b/Network/HTTP/Conduit/Manager.hs
@@ -21,7 +21,6 @@
     , failedConnectionException
     ) where
 
-import Debug.Trace
 #if !MIN_VERSION_base(4,6,0)
 import Prelude hiding (catch)
 #endif
@@ -139,7 +138,7 @@
 takeSocket man key =
     I.atomicModifyIORef (mConns man) go
   where
-    go Nothing = trace "Using a closed manager" (Nothing, Nothing)
+    go Nothing = (Nothing, Nothing)
     go (Just m) =
         case Map.lookup key m of
             Nothing -> (Just m, Nothing)
diff --git a/http-conduit.cabal b/http-conduit.cabal
--- a/http-conduit.cabal
+++ b/http-conduit.cabal
@@ -1,5 +1,5 @@
 name:            http-conduit
-version:         1.9.4.3
+version:         1.9.4.4
 license:         BSD3
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>