diff --git a/.travis.yml b/.travis.yml
index 63472bb..256958a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -67,7 +67,7 @@ matrix:
 env:
   global:
    - JOBS: "3"
-   - OSRM_RELEASE: "develop"
+   - OSRM_RELEASE: "c8557cf28f51fa0935a236c939c0b32c2063bf49"
    - secure: KitzGZjoDblX/3heajcvssGz0JnJ/k02dr2tu03ksUV+6MogC3RSQudqyKY57+f8VyZrcllN/UOlJ0Q/3iG38Oz8DljC+7RZxtkVmE1SFBoOezKCdhcvWM12G3uqPs7hhrRxuUgIh0C//YXEkulUrqa2H1Aj2xeen4E3FAqEoy0=
    - secure: WLGmxl6VTVWhXGm6X83GYNYzPNsvTD+9usJOKM5YBLAdG7cnOBQBNiCCUKc9OZMMZVUr3ec2/iigakH5Y8Yc+U6AlWKzlORyqWLuk4nFuoedu62x6ocQkTkuOc7mHiYhKd21xTGMYauaZRS6kugv4xkpGES2UjI2T8cjZ+LN2jU=
 
diff --git a/package.json b/package.json
index da1b275..eb1d367 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "url": "https://github.com/Project-OSRM/node-osrm",
   "homepage": "http://project-osrm.org",
   "author": "Dane Springmeyer <springmeyer>",
-  "version": "4.9.0-develop.0",
+  "version": "4.9.1-traffic.1",
   "main": "./lib/osrm.js",
   "license": "BSD",
   "bugs": {
diff --git a/src/node_osrm.cpp b/src/node_osrm.cpp
index 216622e..09b967b 100644
--- a/src/node_osrm.cpp
+++ b/src/node_osrm.cpp
@@ -420,6 +420,11 @@ void Engine::match(const Nan::FunctionCallbackInfo<v8::Value> &args)
     {
         params->matching_beta = obj->Get(Nan::New("matching_beta").ToLocalChecked())->NumberValue();
     }
+    if (obj->Has(Nan::New("matching_prune_factor").ToLocalChecked()))
+    {
+        params->matching_beta = obj->Get(Nan::New("matching_prune_factor").ToLocalChecked())->NumberValue();
+    }
+
 
     if (timestamps->IsArray())
     {