diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 1.6.3
+
+* Add missing export for `SubHandlerFor`
+
 ## 1.6.2
 
 * Derive a `Show` instance for `ResourceTree` and `FlatResource` [#1492](https://github.com/yesodweb/yesod/pull/1492)
diff --git a/Yesod/Core/Class/Yesod.hs b/Yesod/Core/Class/Yesod.hs
--- a/Yesod/Core/Class/Yesod.hs
+++ b/Yesod/Core/Class/Yesod.hs
@@ -488,7 +488,7 @@
 --
 -- For details, see the "AJAX CSRF protection" section of "Yesod.Core.Handler".
 --
--- You can add this chain this middleware together with other middleware like so:
+-- You can chain this middleware together with other middleware like so:
 --
 -- @
 -- 'yesodMiddleware' = 'defaultYesodMiddleware' . 'defaultCsrfMiddleware'
diff --git a/Yesod/Core/Handler.hs b/Yesod/Core/Handler.hs
--- a/Yesod/Core/Handler.hs
+++ b/Yesod/Core/Handler.hs
@@ -148,6 +148,7 @@
     , setMessageI
     , getMessage
       -- * Subsites
+    , SubHandlerFor
     , getSubYesod
     , getRouteToParent
     , getSubCurrentRoute
diff --git a/yesod-core.cabal b/yesod-core.cabal
--- a/yesod-core.cabal
+++ b/yesod-core.cabal
@@ -1,5 +1,5 @@
 name:            yesod-core
-version:         1.6.2
+version:         1.6.3
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>