diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 1.4.8.2
+
+* Allow blaze-builder 0.4
+
 ## 1.4.8.1
 
 * Bump upper bound on path-pieces
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:         1.4.8.1
+version:         1.4.8.2
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -31,7 +31,7 @@
                    , template-haskell
                    , path-pieces           >= 0.1.2    && < 0.3
                    , shakespeare           >= 2.0
-                   , blaze-builder         >= 0.2.1.4  && < 0.4
+                   , blaze-builder         >= 0.2.1.4  && < 0.5
                    , transformers          >= 0.2.2
                    , mtl
                    , clientsession         >= 0.9.1    && < 0.10