diff --git a/README.md b/README.md
index 2c97555..f3cd403 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ exercises you've already completed.
 The only things you'll need to run the Clojure Koans are:
 
 - JRE 1.5 or higher
-- [clojure-1.3.0.jar](http://repo1.maven.org/maven2/org/clojure/clojure/1.3.0/clojure-1.3.0.zip)
+- [clojure-1.5.0.jar](http://repo1.maven.org/maven2/org/clojure/clojure/1.5.0/clojure-1.5.0.zip)
 
 You can use [Leiningen](http://github.com/technomancy/leiningen) to
 automatically install the Clojure jar in the right place. Leiningen will also
diff --git a/project.clj b/project.clj
index c2fccf5..f924a9b 100644
--- a/project.clj
+++ b/project.clj
@@ -1,6 +1,6 @@
-(defproject clojure-koans "0.4.7"
+(defproject clojure-koans "0.4.8"
   :description "The Clojure koans."
-  :dependencies [[org.clojure/clojure "1.3.0"]
+  :dependencies [[org.clojure/clojure "1.5.0"]
                  [koan-engine "0.1.3"]]
   :dev-dependencies [[lein-koan "0.1.2"]]
   :profiles {:dev {:dependencies [[lein-koan "0.1.2"]]}}