diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 1.3.9.1
+
+* Allow blaze-builder 0.4
+
 ## 1.3.9
 
 * Support chain certificates in credentials [#82](https://github.com/snoyberg/keter/pull/82)
diff --git a/keter.cabal b/keter.cabal
--- a/keter.cabal
+++ b/keter.cabal
@@ -1,5 +1,5 @@
 Name:                keter
-Version:             1.3.9
+Version:             1.3.9.1
 Synopsis:            Web application deployment manager, focusing on Haskell web frameworks
 Description:         Hackage documentation generation is not reliable. For up to date documentation, please see: <http://www.stackage.org/package/keter>.
 Homepage:            http://www.yesodweb.com/
@@ -31,7 +31,7 @@
                      , time
                      , tar                       >= 0.4
                      , template-haskell
-                     , blaze-builder             >= 0.3           && < 0.4
+                     , blaze-builder             >= 0.3           && < 0.5
                      , yaml                      >= 0.8.4         && < 0.9
                      , unix-compat               >= 0.3           && < 0.5
                      , fsnotify                  >= 0.0.11