diff --git a/service_broker/Gemfile.lock b/service_broker/Gemfile.lock
index 9edadfa..4b820b8 100644
--- a/service_broker/Gemfile.lock
+++ b/service_broker/Gemfile.lock
@@ -31,7 +31,7 @@ GEM
     mocha (1.3.0)
       metaclass (~> 0.0.1)
     multipart-post (2.1.1)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     octokit (4.7.0)
       sawyer (~> 0.8.0, >= 0.5.3)
@@ -39,24 +39,24 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.6)
-    rack (2.2.3)
-    rack-protection (2.0.2)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rack-test (0.7.0)
       rack (>= 1.0, < 3)
     rake (12.3.3)
-    ruby2_keywords (0.0.4)
+    ruby2_keywords (0.0.5)
     safe_yaml (1.0.4)
     sawyer (0.8.2)
       addressable (>= 2.3.5)
       faraday (> 0.8, < 2.0)
-    sinatra (2.0.2)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.2)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     sshkey (1.9.0)
-    tilt (2.0.10)
+    tilt (2.0.11)
     webmock (3.0.1)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)