diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 3.3.15
+
+* Using http2 v3.
+
 ## 3.3.14
 
 * Drop support for GHC < 8.2.
diff --git a/Network/Wai/Handler/Warp/HTTP2.hs b/Network/Wai/Handler/Warp/HTTP2.hs
--- a/Network/Wai/Handler/Warp/HTTP2.hs
+++ b/Network/Wai/Handler/Warp/HTTP2.hs
@@ -13,7 +13,7 @@
 import qualified Data.ByteString as BS
 import Data.IORef (IORef, newIORef, writeIORef)
 import qualified Data.IORef as I
-import qualified Network.HTTP2 as H2
+import qualified Network.HTTP2.Frame as H2
 import qualified Network.HTTP2.Server as H2
 import Network.Socket (SockAddr)
 import Network.Wai
@@ -50,6 +50,7 @@
           , confSendAll           = sendBS
           , confReadN             = recvN
           , confPositionReadMaker = pReadMaker ii
+          , confTimeoutManager    = timeoutManager ii
           }
     checkTLS
     setConnHTTP2 conn True
diff --git a/Network/Wai/Handler/Warp/Settings.hs b/Network/Wai/Handler/Warp/Settings.hs
--- a/Network/Wai/Handler/Warp/Settings.hs
+++ b/Network/Wai/Handler/Warp/Settings.hs
@@ -15,7 +15,7 @@
 import Data.Version (showVersion)
 import GHC.IO.Exception (IOErrorType(..))
 import qualified Network.HTTP.Types as H
-import Network.HTTP2( HTTP2Error (..), ErrorCodeId (..) )
+import Network.HTTP2.Frame (HTTP2Error (..), ErrorCodeId (..))
 import Network.Socket (SockAddr)
 import Network.Wai
 import qualified Paths_warp
diff --git a/warp.cabal b/warp.cabal
--- a/warp.cabal
+++ b/warp.cabal
@@ -1,5 +1,5 @@
 Name:                warp
-Version:             3.3.14
+Version:             3.3.15
 Synopsis:            A fast, light-weight web server for WAI applications.
 License:             MIT
 License-file:        LICENSE
@@ -45,7 +45,7 @@
                    , hashable
                    , http-date
                    , http-types                >= 0.12
-                   , http2                     >= 2.0      && < 2.1
+                   , http2                     >= 3.0      && < 3.1
                    , iproute                   >= 1.3.1
                    , simple-sendfile           >= 0.2.7    && < 0.3
                    , stm                       >= 2.3
@@ -199,7 +199,7 @@
                    , http-client
                    , http-date
                    , http-types                >= 0.12
-                   , http2                     >= 2.0      && < 2.1
+                   , http2                     >= 3.0      && < 3.1
                    , iproute                   >= 1.3.1
                    , lifted-base               >= 0.1
                    , network