diff --git a/lib/Network/HTTP/Req/OAuth2.hs b/lib/Network/HTTP/Req/OAuth2.hs
--- a/lib/Network/HTTP/Req/OAuth2.hs
+++ b/lib/Network/HTTP/Req/OAuth2.hs
@@ -7,7 +7,7 @@
 Stability   : stable
 Portability : portable
 
-This package provides basic support of OAuth2 authentication for <https://hackage.haskell.org/package/req Req>.
+This package provides basic support for OAuth2 authentication for <https://hackage.haskell.org/package/req Req>.
 -}
 
 module Network.HTTP.Req.OAuth2
@@ -25,6 +25,7 @@
     , UpdateTokenPair
     , evalOAuth2
     , fetchAccessToken
+    , fetchRefreshToken
     , getAuthCode
     , oAuth2Get
     , runOAuth2
diff --git a/lib/Network/HTTP/Req/OAuth2/Internal/AccessToken.hs b/lib/Network/HTTP/Req/OAuth2/Internal/AccessToken.hs
--- a/lib/Network/HTTP/Req/OAuth2/Internal/AccessToken.hs
+++ b/lib/Network/HTTP/Req/OAuth2/Internal/AccessToken.hs
@@ -8,13 +8,11 @@
 
 import           Data.Aeson ((.:), withObject)
 import           Data.Aeson.Types (Parser, Value, parseEither)
-import           Data.Monoid ((<>))
 import           Data.Text (Text)
-import           Network.HTTP.Req ((=:))
+import           Network.HTTP.Req ((=:), useHttpsURI)
 import           Network.HTTP.Req.OAuth2.Internal.AuthCode
 import           Network.HTTP.Req.OAuth2.Internal.Types
 import           Network.HTTP.Req.OAuth2.Internal.Util
-import           Network.HTTP.Req.Url.Extra (toUrlHttps)
 
 data AccessTokenRequest = AccessTokenRequest AuthCode
 
@@ -31,7 +29,7 @@
 fetchAccessToken app (AccessTokenRequest (AuthCode ac)) = do
     let clientPair = appClientPair app
         ClientPair (ClientId cid) _ = clientPair
-        Just (url, _) = toUrlHttps $ appTokenUri app
+        Just (url, _) = useHttpsURI $ appTokenUri app
     parseEither pResponse <$>
         oAuth2PostRaw
             url
diff --git a/lib/Network/HTTP/Req/OAuth2/Internal/RefreshToken.hs b/lib/Network/HTTP/Req/OAuth2/Internal/RefreshToken.hs
--- a/lib/Network/HTTP/Req/OAuth2/Internal/RefreshToken.hs
+++ b/lib/Network/HTTP/Req/OAuth2/Internal/RefreshToken.hs
@@ -8,10 +8,8 @@
 
 import           Data.Aeson ((.:), withObject)
 import           Data.Aeson.Types (Parser, Value, parseEither)
-import           Data.Monoid ((<>))
 import           Data.Text (Text)
-import           Network.HTTP.Req ((=:))
-import           Network.HTTP.Req.Url.Extra (toUrlHttps)
+import           Network.HTTP.Req ((=:), useHttpsURI)
 import           Network.HTTP.Req.OAuth2.Internal.Types
 import           Network.HTTP.Req.OAuth2.Internal.Util
 
@@ -22,7 +20,7 @@
 fetchRefreshToken :: App -> RefreshTokenRequest -> IO (Either String RefreshTokenResponse)
 fetchRefreshToken app (RefreshTokenRequest (RefreshToken rt)) = do
     let clientPair = appClientPair app
-        Just (url, _) = toUrlHttps $ appTokenUri app
+        Just (url, _) = useHttpsURI $ appTokenUri app
     parseEither pResponse <$>
         oAuth2PostRaw
             url
diff --git a/lib/Network/HTTP/Req/OAuth2/Internal/Util.hs b/lib/Network/HTTP/Req/OAuth2/Internal/Util.hs
--- a/lib/Network/HTTP/Req/OAuth2/Internal/Util.hs
+++ b/lib/Network/HTTP/Req/OAuth2/Internal/Util.hs
@@ -16,7 +16,6 @@
 import           Data.Aeson (Value)
 import qualified Data.ByteString as ByteString (append, concat)
 import qualified Data.ByteString.Base64 as Base64 (encode)
-import           Data.Default.Class (def)
 import qualified Data.Text.Encoding as Text (encodeUtf8)
 import qualified Network.HTTP.Client as HTTP (HttpException(..), HttpExceptionContent(..), responseStatus)
 import           Network.HTTP.Req
@@ -27,6 +26,7 @@
                     , ReqBodyUrlEnc(..)
                     , Scheme(..)
                     , Url
+                    , defaultHttpConfig
                     , header
                     , jsonResponse
                     , oAuth2Bearer
@@ -57,7 +57,7 @@
 
 oAuth2PostRaw :: Url 'Https -> Option 'Https -> FormUrlEncodedParam -> IO Value
 oAuth2PostRaw url opts formBody =
-    runReq def $
+    runReq defaultHttpConfig $
         responseBody <$> req POST url (ReqBodyUrlEnc formBody) jsonResponse opts
 
 evalOAuth2 :: TokenPair -> OAuth2 a -> IO a
diff --git a/lib/Network/HTTP/Req/OAuth2/Internal/Verbs.hs b/lib/Network/HTTP/Req/OAuth2/Internal/Verbs.hs
--- a/lib/Network/HTTP/Req/OAuth2/Internal/Verbs.hs
+++ b/lib/Network/HTTP/Req/OAuth2/Internal/Verbs.hs
@@ -9,13 +9,12 @@
 import           Control.Monad.Trans.State.Strict (get, put)
 import           Data.Aeson (Value)
 import           Data.Aeson.Types (Parser, parseEither)
-import           Data.Default.Class (def)
-import           Data.Monoid ((<>))
 import           Network.HTTP.Req
                     ( GET(..)
                     , NoReqBody(..)
                     , Scheme(..)
                     , Url
+                    , defaultHttpConfig
                     , jsonResponse
                     , req
                     , responseBody
@@ -52,7 +51,7 @@
     -> AccessToken
     -> IO Value
 getHelper url accessToken =
-    responseBody <$> (runReq def $ req GET url NoReqBody jsonResponse (oAuth2BearerHeader accessToken <> acceptLanguage))
+    responseBody <$> (runReq defaultHttpConfig $ req GET url NoReqBody jsonResponse (oAuth2BearerHeader accessToken <> acceptLanguage))
 
 refreshHelper ::
     App
diff --git a/req-oauth2.cabal b/req-oauth2.cabal
--- a/req-oauth2.cabal
+++ b/req-oauth2.cabal
@@ -1,6 +1,6 @@
 
 name:                                       req-oauth2
-version:                                    0.1.0.0
+version:                                    0.1.0.1
 synopsis:                                   Provides OAuth2 authentication for use with Req
 description:                                This package adds OAuth2 authentication to Req.
 homepage:                                   https://github.com/rcook/req-oauth2#readme
@@ -8,7 +8,7 @@
 license-file:                               LICENSE
 author:                                     Richard Cook
 maintainer:                                 rcook@rcook.org
-copyright:                                  2018 Richard Cook
+copyright:                                  (C) 2018-2021 Richard Cook
 category:                                   Command Line
 build-type:                                 Simple
 cabal-version:                              >= 1.10
@@ -36,7 +36,6 @@
                                           , lens
                                           , modern-uri
                                           , req
-                                          , req-url-extra
                                           , text
                                           , transformers
   exposed-modules:                          Network.HTTP.Req.OAuth2