diff --git a/happstack-hstringtemplate.cabal b/happstack-hstringtemplate.cabal
--- a/happstack-hstringtemplate.cabal
+++ b/happstack-hstringtemplate.cabal
@@ -1,5 +1,5 @@
 Name:                happstack-hstringtemplate
-Version:             7.0.0
+Version:             7.0.1
 Synopsis:            Support for using HStringTemplate in Happstack
 Description:         Happstack is a web application framework. HStringTemplate is a templating solution.
 Homepage:            http://www.happstack.com/
@@ -25,6 +25,6 @@
                        happstack-server >= 6.0 && < 7.1,
                        hslogger,
                        HStringTemplate >= 0.4.3 && < 0.7,
-                       mtl >= 1.1 && < 2.1
+                       mtl >= 1.1 && < 2.2