diff --git a/test/Network/Connection/CPP.hs b/test/Network/Connection/CPP.hs
new file mode 100644
index 0000000..7efeb8e
--- /dev/null
+++ b/test/Network/Connection/CPP.hs
@@ -0,0 +1,24 @@
+{-# LANGUAGE CPP #-}
+
+{- |
+Module      : Network.Connection.CPP
+Copyright   : (c) 2022 Tim Emiola
+Maintainer  : Tim Emiola <adetokunbo@emio.la>
+SPDX-License-Identifier: BSD3
+-}
+module Network.Connection.CPP (noCheckSettings) where
+
+import Network.Connection (TLSSettings (..))
+
+
+#if MIN_VERSION_crypton_connection(0,4,0)
+import Data.Default (def)
+#endif
+
+#if MIN_VERSION_crypton_connection(0,4,0)
+noCheckSettings :: TLSSettings
+noCheckSettings = TLSSettingsSimple True False False def
+#else
+noCheckSettings :: TLSSettings
+noCheckSettings = TLSSettingsSimple True False False
+#endif
diff --git a/test/Test/Fetch.hs b/test/Test/Fetch.hs
index 814887d..f1ce176 100644
--- a/test/Test/Fetch.hs
+++ b/test/Test/Fetch.hs
@@ -24,7 +24,7 @@ import Data.Conduit
 import qualified Data.Conduit.Binary as CB
 import Data.Int (Int64)
 import Data.Maybe (fromMaybe)
-import Network.Connection (TLSSettings (..))
+import Network.Connection.CPP (noCheckSettings)
 import Network.HTTP.Client
   ( BodyReader
   , Request
@@ -39,14 +39,13 @@ import Network.HTTP.Client
   , withResponse
   )
 import Network.HTTP.Client.TLS (mkManagerSettings)
--- import Network.HTTP.Simple (setRequestManager, withResponse)
 import Network.HTTP.Types (hContentLength, statusCode)
 import Test.HttpReply
 
 
 fetch :: Request -> IO HttpReply
 fetch req = do
-  let mSettings = mkManagerSettings (TLSSettingsSimple True False False) Nothing
+  let mSettings = mkManagerSettings noCheckSettings Nothing
       mSettings' = managerSetProxy proxyFromRequest mSettings
   m <- newManager mSettings'
   withResponse req m getSrc
diff --git a/test/Test/NginxGateway.hs b/test/Test/NginxGateway.hs
index 30f1f8d..9e4285d 100644
--- a/test/Test/NginxGateway.hs
+++ b/test/Test/NginxGateway.hs
@@ -30,7 +30,7 @@ import Data.List (find)
 import Data.Text (Text)
 import qualified Data.Text as Text
 import qualified Data.Text.IO as Text
-import Network.Connection (TLSSettings (..))
+import Network.Connection.CPP (noCheckSettings)
 import qualified Network.HTTP.Client as HC
 import qualified Network.HTTP.Client.TLS as HC
 import Network.HTTP.Types.Header (hHost)
@@ -217,9 +217,8 @@ pingHttps handle = toPinged @HC.HttpException Proxy $ do
 -- that differs from the connection IP address, that's not supported by
 -- http-client-tls
 mkBadTlsManager :: IO HC.Manager
-mkBadTlsManager = do
-  let tlsSettings = TLSSettingsSimple True False False
-  HC.newTlsManagerWith $ HC.mkManagerSettings tlsSettings Nothing
+mkBadTlsManager =
+  HC.newTlsManagerWith $ HC.mkManagerSettings noCheckSettings Nothing
 
 
 -- | Determine the status from a secure Get to host localhost.
diff --git a/wai-middleware-delegate.cabal b/wai-middleware-delegate.cabal
index f78e142..63d0e57 100644
--- a/wai-middleware-delegate.cabal
+++ b/wai-middleware-delegate.cabal
@@ -64,6 +64,7 @@ test-suite integration-test
     Test.NginxGateway
     Test.TestRequests
     Test.WithExtras
+    Network.Connection.CPP
 
   hs-source-dirs:   test
   build-depends:
@@ -75,7 +76,7 @@ test-suite integration-test
     , case-insensitive
     , conduit
     , conduit-extra
-    , crypton-connection       >=0.3.1 && < 0.4
+    , crypton-connection       >=0.3.1 && < 0.5
     , data-default
     , directory                >=1.3 && <1.4
     , filepath                 >=1.4 && <1.6