diff --git a/lib/samlp.js b/lib/samlp.js
index e568f16..0a53d96 100644
--- a/lib/samlp.js
+++ b/lib/samlp.js
@@ -5,6 +5,7 @@ var xtend                 = require('xtend');
 var utils                 = require('./utils');
 var templates             = require('./templates');
 var encoders              = require('./encoders');
+var signers               = require('./signers');
 var PassportProfileMapper = require('./claims/PassportProfileMapper');
 var constants             = require('./constants');
 
@@ -29,27 +30,8 @@ function buildSamlResponse(options) {
       .replace(/>(\s*)</g, '><') //unindent
       .trim();
 
-    var sig = new SignedXml(null, {
-      signatureAlgorithm: constants.ALGORITHMS.SIGNATURE[options.signatureAlgorithm]
-    });
-
-    sig.addReference(
-      constants.ELEMENTS.RESPONSE.SIGNATURE_LOCATION_PATH,
-      ["http://www.w3.org/2000/09/xmldsig#enveloped-signature", "http://www.w3.org/2001/10/xml-exc-c14n#"],
-      constants.ALGORITHMS.DIGEST[options.digestAlgorithm]);
-
-    sig.signingKey = options.key;
-
-    var pem = encoders.removeHeaders(options.cert);
-    sig.keyInfoProvider = {
-      getKeyInfo: function (key, prefix) {
-        prefix = prefix ? prefix + ':' : prefix;
-        return "<" + prefix + "X509Data><" + prefix + "X509Certificate>" + pem + "</" + prefix + "X509Certificate></" + prefix + "X509Data>";
-      }
-    };
-
-    sig.computeSignature(cannonicalized, { prefix: options.signatureNamespacePrefix, location: { action: 'after', reference: "//*[local-name(.)='Issuer']" }});
-    SAMLResponse = sig.getSignedXml();
+      options.reference = constants.ELEMENTS.RESPONSE.SIGNATURE_LOCATION_PATH;
+      return signers.signXml(options, cannonicalized);
   }
 
   return SAMLResponse;
diff --git a/package.json b/package.json
index b768230..ab7f8b5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "samlp",
-  "version": "3.4.0",
+  "version": "3.4.1",
   "description": "SAML Protocol server middleware",
   "main": "lib/index.js",
   "scripts": {
@@ -20,24 +20,24 @@
   "license": "mit",
   "dependencies": {
     "@auth0/thumbprint": "0.0.6",
-    "ejs": "2.5.5",
+    "ejs": "2.6",
     "flowstate": "^0.4.0",
     "querystring": "^0.2.0",
-    "saml": "^0.12.1",
-    "xml-crypto": "^0.10.1",
-    "xmldom": "auth0/xmldom#v0.1.19-auth0_1",
-    "xpath": "0.0.5",
-    "xtend": "^1.0.3"
+    "saml": "0.13",
+    "xml-crypto": "1.4",
+    "xmldom": "github:auth0/xmldom#v0.1.19-auth0_1",
+    "xpath": "0.0.27",
+    "xtend": "4"
   },
   "devDependencies": {
-    "body-parser": "^1.15.2",
-    "chai": "~1.5.0",
-    "cheerio": "~0.10.7",
-    "express": "~3.1.0",
-    "express-session": "^1.14.2",
-    "istanbul": "^0.4.5",
-    "mocha": "~1.8.1",
-    "request": "~2.14.0",
-    "uid2": "0.0.3"
+    "body-parser": "^1",
+    "chai": "4",
+    "cheerio": "^0.22.0",
+    "express": "^3",
+    "express-session": "^1",
+    "istanbul": "^0.4",
+    "mocha": "1",
+    "request": "~2.14",
+    "uid2": "0"
   }
 }
diff --git a/test/samlp.tests.js b/test/samlp.tests.js
index 264dddf..b0741c3 100644
--- a/test/samlp.tests.js
+++ b/test/samlp.tests.js
@@ -596,7 +596,7 @@ describe('samlp', function () {
 
       it('should return signature with the specified signatureNamespacePrefix inside the response', function(){
         var doc = new xmldom.DOMParser().parseFromString(samlResponse);
-        var signature = doc.documentElement.getElementsByTagName('ds:Signature');
+        var signature = doc.documentElement.getElementsByTagName('Signature');
         expect(signature[0].parentNode.nodeName).to.equal('samlp:Response');
       });
     });