diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 1.4.29
+
+* Exports some internals and fix version bounds [#1318](https://github.com/yesodweb/yesod/pull/1318)
+
 ## 1.4.28
 
 * Add ToWidget instances for strict text, lazy text, and text builder [#1310](https://github.com/yesodweb/yesod/pull/1310)
diff --git a/Yesod/Core/Dispatch.hs b/Yesod/Core/Dispatch.hs
--- a/Yesod/Core/Dispatch.hs
+++ b/Yesod/Core/Dispatch.hs
@@ -17,6 +17,8 @@
     , mkYesodSubData
     , mkYesodDispatch
     , mkYesodSubDispatch
+      -- *** Helpers
+    , getGetMaxExpires
       -- ** Path pieces
     , PathPiece (..)
     , PathMultiPiece (..)
@@ -24,6 +26,7 @@
       -- * Convert to WAI
     , toWaiApp
     , toWaiAppPlain
+    , toWaiAppYre
     , warp
     , warpDebug
     , warpEnv
@@ -93,6 +96,11 @@
             , yreGetMaxExpires = getMaxExpires
             }
 
+-- | Pure low level function to construct WAI application. Usefull
+-- when you need not standard way to run your app, or want to embed it
+-- inside another app.
+--
+-- @since 1.4.29
 toWaiAppYre :: YesodDispatch site => YesodRunnerEnv site -> W.Application
 toWaiAppYre yre req =
     case cleanPath site $ W.pathInfo req of
@@ -237,6 +245,10 @@
                 Nothing -> error $ "warpEnv: invalid PORT environment variable: " ++ show portS
                 Just port -> warp port site
 
+-- | Default constructor for 'yreGetMaxExpires' field. Low level
+-- function for simple manual construction of 'YesodRunnerEnv'.
+--
+-- @since 1.4.29
 getGetMaxExpires :: IO (IO Text)
 getGetMaxExpires = mkAutoUpdate defaultUpdateSettings
   { updateAction = getCurrentMaxExpiresRFC1123
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:         1.4.28
+version:         1.4.29
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -56,7 +56,7 @@
                    , resourcet             >= 0.4.9    && < 1.2
                    , lifted-base           >= 0.1.2
                    , blaze-html            >= 0.5
-                   , blaze-markup          >= 0.5.1
+                   , blaze-markup          >= 0.7.1
                    , data-default
                    , safe
                    , warp                  >= 3.0.2