diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+#### 0.34.0.2
+
+* Allow utf8-string 1.
+
 #### 0.34.0.1
 
 * Fix for base 4.8/GHC 7.10.
diff --git a/rest-core.cabal b/rest-core.cabal
--- a/rest-core.cabal
+++ b/rest-core.cabal
@@ -1,5 +1,5 @@
 name:                rest-core
-version:             0.34.0.1
+version:             0.34.0.2
 description:         Rest API library.
 synopsis:            Rest API library.
 maintainer:          code@silk.co
@@ -60,7 +60,7 @@
     , transformers >= 0.2 && < 0.5
     , unordered-containers == 0.2.*
     , uri-encode == 1.5.*
-    , utf8-string == 0.3.*
+    , utf8-string >= 0.3 && < 1.1
     , uuid >= 1.2 && < 1.4
 
 test-suite rest-tests