diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+#### 0.34.0.3
+
+* Allow `aeson-utils 0.3.*`
+
 #### 0.34.0.2
 
 * Allow utf8-string 1.
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:             0.34.0.2
+version:             0.34.0.3
 description:         Rest API library.
 synopsis:            Rest API library.
 maintainer:          code@silk.co
@@ -41,7 +41,7 @@
   build-depends:
       base >= 4.5 && < 4.9
     , aeson >= 0.7 && < 0.9
-    , aeson-utils == 0.2.*
+    , aeson-utils >= 0.2 && < 0.4
     , bytestring >= 0.9 && < 0.11
     , either >= 3.4 && < 4.4
     , errors == 1.4.*