diff --git a/index.js b/index.js
index dfba8cb..0e1bce5 100644
--- a/index.js
+++ b/index.js
@@ -6,5 +6,6 @@
  */
 module.exports = {
     "registry" : require("./lib/registry.js"),
-    "utils" : require("./lib/utils.js")
+    "utils" : require("./lib/utils.js"),
+    "version" : require("./lib/version.js")
 };
\ No newline at end of file
diff --git a/lib/version.js b/lib/version.js
new file mode 100644
index 0000000..747a715
--- /dev/null
+++ b/lib/version.js
@@ -0,0 +1,42 @@
+"use strict";
+
+let version = {
+    'getLatest': (vPre, vNew) => {
+        if (!vPre)
+            return vNew;
+
+        if (version.validate(vPre) && version.validate(vNew)) {
+            let vNewNb = parseFloat(vNew);
+            let vPreNb = parseFloat(vPre);
+
+            if (vNewNb > vPreNb)
+                return vNew;
+        }
+        return vPre;
+    },
+
+    'isLatest': (vSrc, vCom) => {
+        if (version.validate(vSrc) && version.validate(vCom)) {
+            let vSrcNb = parseFloat(vSrc);
+            let vComNb = parseFloat(vCom);
+
+            if (vSrcNb > vComNb)
+                return true;
+        }
+        return false;
+    },
+
+    'validate': (ver) => {
+        if (ver) {
+            if (typeof ver !== 'string')
+                ver = "" + ver;
+            let matches = ver.match(/[0-9]+(.[0-9]+)?/);
+            if (matches && matches.length > 0) {
+                return true;
+            }
+        }
+        return false
+    }
+};
+
+module.exports = version;
\ No newline at end of file
diff --git a/package.json b/package.json
index f810b65..9d80641 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "soajs.core.libs",
   "description": "SOAJS core libraries package",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "author": {
     "name": "soajs team",
     "email": "team@soajs.org"
diff --git a/test/unit/_servers.test.js b/test/unit/_servers.test.js
index 35c612b..baa041f 100644
--- a/test/unit/_servers.test.js
+++ b/test/unit/_servers.test.js
@@ -10,6 +10,7 @@ describe("importing sample data", function () {
     after(function (done) {
         console.log('test data imported.');
         require("./lib.utils.test.js");
+        require("./lib.version.test.js");
         done();
     });
 });
\ No newline at end of file
diff --git a/test/unit/lib.utils.test.js b/test/unit/lib.utils.test.js
index b434bfd..012bd39 100644
--- a/test/unit/lib.utils.test.js
+++ b/test/unit/lib.utils.test.js
@@ -22,4 +22,16 @@ describe("testing utils", function(){
 			done();
 		});
 	});
+
+    describe("testing validProperty", function(){
+    	var obj1= {
+    		"antoine" : "hage"
+		};
+
+        it("testing validProperty", function(done){
+            var obj2 = utils.validProperty(obj1,"antoine");
+            assert.ok(obj2);
+            done();
+        });
+    });
 });
\ No newline at end of file
diff --git a/test/unit/lib.version.test.js b/test/unit/lib.version.test.js
new file mode 100644
index 0000000..18880d4
--- /dev/null
+++ b/test/unit/lib.version.test.js
@@ -0,0 +1,61 @@
+"use strict";
+let assert = require('assert');
+let helper = require("../helper.js");
+
+var utils = helper.requireModule('./lib/version');
+
+describe("testing version", function () {
+
+
+    let version1 = "1.0";
+    let version2 = "1.2";
+    let wrongVersion = "b.a.3";
+
+    it("testing getLatest", function (done) {
+        let ver = utils.getLatest(version1, version2);
+        assert.ok(ver);
+        assert.equal(ver, version2);
+        done();
+    });
+    it("testing getLatest with null version", function (done) {
+        let ver = utils.getLatest(null, version2);
+        assert.ok(ver);
+        assert.equal(ver, version2);
+        done();
+    });
+    it("testing getLatest with wrong version", function (done) {
+        let ver = utils.getLatest(wrongVersion, version2);
+        assert.ok(ver);
+        assert.equal(ver, wrongVersion);
+        done();
+    });
+
+
+    it("testing isLatest - false", function (done) {
+        let ver = utils.isLatest(version1, version2);
+        assert.ok(!ver);
+        done();
+    });
+    it("testing isLatest - true", function (done) {
+        let ver = utils.isLatest(version2, version1);
+        assert.ok(ver);
+        done();
+    });
+    it("testing isLatest with null", function (done) {
+        let ver = utils.isLatest(null, version2);
+        assert.ok(!ver);
+        done();
+    });
+
+
+    it("testing validate not string", function (done) {
+        let ver = utils.validate(1);
+        assert.ok(ver);
+        done();
+    });
+    it("testing validate null", function (done) {
+        let ver = utils.validate(null);
+        assert.ok(!ver);
+        done();
+    });
+});
\ No newline at end of file