diff --git a/Network/HTTP/Conduit/Browser2.hs b/Network/HTTP/Conduit/Browser2.hs
--- a/Network/HTTP/Conduit/Browser2.hs
+++ b/Network/HTTP/Conduit/Browser2.hs
@@ -405,7 +405,7 @@
 setUserAgent       :: Maybe BS.ByteString -> BrowserAction ()
 setUserAgent Nothing = deleteOverrideHeader HT.hUserAgent
 setUserAgent (Just b) = insertOverrideHeader (HT.hUserAgent, b)
-withUserAgent      :: Maybe BS.ByteString -> BrowserAction () -> BrowserAction ()
+withUserAgent      :: Maybe BS.ByteString -> BrowserAction a -> BrowserAction a
 withUserAgent a b = do
   current <- getOverrideHeaders
   setUserAgent a
diff --git a/http-conduit-browser.cabal b/http-conduit-browser.cabal
--- a/http-conduit-browser.cabal
+++ b/http-conduit-browser.cabal
@@ -1,5 +1,5 @@
 name:            http-conduit-browser
-version:         1.6.3
+version:         1.6.3.1
 license:         BSD3
 license-file:    LICENSE
 author:          Myles C. Maxfield <myles.maxfield@gmail.com>