diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 3.3.13
+
+* pReadMaker is exported from the Internal module.
+
 ## 3.3.12
 
 * Fixing HTTP/2 logging relating to status and push.
diff --git a/Network/Wai/Handler/Warp/HTTP2/File.hs b/Network/Wai/Handler/Warp/HTTP2/File.hs
--- a/Network/Wai/Handler/Warp/HTTP2/File.hs
+++ b/Network/Wai/Handler/Warp/HTTP2/File.hs
@@ -13,6 +13,9 @@
 import Network.Wai.Handler.Warp.FdCache
 import Network.Wai.Handler.Warp.SendFile (positionRead)
 
+-- | 'PositionReadMaker' based on file descriptor cache.
+--
+-- Since 3.3.13
 pReadMaker :: InternalInfo -> PositionReadMaker
 pReadMaker ii path = do
     (mfd, refresh) <- getFd ii path
diff --git a/Network/Wai/Handler/Warp/Internal.hs b/Network/Wai/Handler/Warp/Internal.hs
--- a/Network/Wai/Handler/Warp/Internal.hs
+++ b/Network/Wai/Handler/Warp/Internal.hs
@@ -70,6 +70,7 @@
     -- * Misc
   , http2server
   , withII
+  , pReadMaker
   ) where
 
 import System.TimeManager
@@ -79,6 +80,7 @@
 import Network.Wai.Handler.Warp.FdCache
 import Network.Wai.Handler.Warp.FileInfoCache
 import Network.Wai.Handler.Warp.HTTP2
+import Network.Wai.Handler.Warp.HTTP2.File
 import Network.Wai.Handler.Warp.Header
 import Network.Wai.Handler.Warp.Recv
 import Network.Wai.Handler.Warp.Request
diff --git a/warp.cabal b/warp.cabal
--- a/warp.cabal
+++ b/warp.cabal
@@ -1,5 +1,5 @@
 Name:                warp
-Version:             3.3.12
+Version:             3.3.13
 Synopsis:            A fast, light-weight web server for WAI applications.
 License:             MIT
 License-file:        LICENSE