diff --git a/cloxp-installer.jar b/cloxp-installer.jar
index 7b14a9c..e239174 100644
Binary files a/cloxp-installer.jar and b/cloxp-installer.jar differ
diff --git a/make-release.sh b/make-release.sh
index 90f5e36..9ac302e 100755
--- a/make-release.sh
+++ b/make-release.sh
@@ -1,6 +1,6 @@
 #! /bin/bash
 
-release="pre-0.0.8";
+release="0.2.0";
 
 lein do clean, uberjar;
 cp target/cloxp-installer-0.1.0-standalone.jar cloxp-installer.jar;
diff --git a/project.clj b/project.clj
index 1b44af2..fd607d2 100644
--- a/project.clj
+++ b/project.clj
@@ -3,7 +3,7 @@
   :license {:name "MIT License"
             :url "http://opensource.org/licenses/MIT"}
   :url "http://github.com/cloxp/cloxp-installer"
-  :dependencies [[org.clojure/clojure "1.6.0"]]
+  :dependencies [[org.clojure/clojure "1.7.0"]]
   :scm {:url "git@github.com:cloxp/cloxp-installer.git"}
   :pom-addition [:developers [:developer
                               [:name "Robert Krahn"]
diff --git a/src/rksm/cloxp_installer/main.clj b/src/rksm/cloxp_installer/main.clj
index 78bdd61..e96bf8e 100644
--- a/src/rksm/cloxp_installer/main.clj
+++ b/src/rksm/cloxp_installer/main.clj
@@ -98,11 +98,20 @@
                 (apply shell/sh (split command-string #" ")))
     (apply shell/sh (split command-string #" "))))
 
+(defn match-version
+  [version-string]
+  (if-let [[parsed major minor patch] (re-find #"([0-9]+)\.([0-9]+)\.([0-9]+)" version-string)]
+    {:major (read-string major)
+      :minor (read-string minor)
+      :patch (read-string patch)}))
+
 (defn assert-bin
-  [name command]
+  [name command & [version-check required-version]]
   (let [{:keys [exit out err]} (cmd command)]
-    (if-not (zero? exit)
-      (install-error name " does not seem to be installed"))))
+    (when-not (zero? exit)
+      (install-error name " does not seem to be installed"))
+    (when (and version-check (not (version-check out)))
+      (install-error name " does not seem to be installed in the required version " required-version))))
 
 (defn assert-command-succeeds
   ([command]
@@ -128,7 +137,7 @@
   [_]
   (println "1. Checking dependencies...")
   (assert-bin "Leiningen" "lein --version")
-  (assert-bin "node.js" "node --version")
+  (assert-bin "node.js" "node --version" (fn [v] (let [{:keys [major]} (match-version v)] (= 4 major))) "v4.x")
   (assert-bin "npm" "npm --version")
   (assert-bin "git" "git --version"))