diff --git a/project.clj b/project.clj
index 6806ab4..bdf9747 100644
--- a/project.clj
+++ b/project.clj
@@ -4,7 +4,7 @@
   :dependencies [[org.clojure/clojure           "1.3.0"]
                  [org.mongodb/mongo-java-driver "2.7.2"]
                  [com.novemberain/validateur    "1.0.0-SNAPSHOT"]]
-  :dev-dependencies [[org.clojure/data.json "0.1.2"]
+  :dev-dependencies [[org.clojure/data.json "0.1.2" :exclusions [org.clojure/clojure]]
                      [clj-time              "0.3.3" :exclusions [org.clojure/clojure]]]
   :dev-resources-path "test/resources"
   :warn-on-reflection true)