diff --git a/Makefile b/Makefile
index 45d97520..27f54e5e 100644
--- a/Makefile
+++ b/Makefile
@@ -11,11 +11,14 @@ default:
 
 clean:
 	rm -rf build
-	#rm -rf ./node_modules
-	#rm -f .sconsign.dblite
+
+dist_clean: clean
+	rm -rf ./node_modules
+	rm -f .sconsign.dblite
 
 requirements:
 	pip install -U scons boto taschenmesser
+	sudo apt update
 	sudo apt install -y npm nodejs-legacy default-jre
 	node -v
 	sudo npm install -g google-closure-compiler nodeunit
diff --git a/lib/session.js b/lib/session.js
index 58df6f8f..93888afe 100644
--- a/lib/session.js
+++ b/lib/session.js
@@ -86,7 +86,8 @@ var Event = function (publication,
                       topic,
                       publisher,
                       publisher_authid,
-                      publisher_authrole) {
+                      publisher_authrole,
+                      retained) {
 
    var self = this;
 
@@ -95,6 +96,7 @@ var Event = function (publication,
    self.publisher = publisher;
    self.publisher_authid = publisher_authid;
    self.publisher_authrole = publisher_authrole;
+   self.retained = retained;
 };
 
 
@@ -500,7 +502,8 @@ var Session = function (socket, defer, onchallenge) {
                             details.topic || (subs[0] && subs[0].topic),
                             details.publisher,
                             details.publisher_authid,
-                            details.publisher_authrole
+                            details.publisher_authrole,
+                            details.retained || false
                       );
 
          for (var i = 0; i < subs.length; ++i) {
diff --git a/package.json b/package.json
index 50bf5801..60a92dce 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "autobahn",
-  "version": "0.12.0",
+  "version": "17.5.1",
   "description": "An implementation of The Web Application Messaging Protocol (WAMP).",
   "main": "index.js",
   "scripts": {