diff --git a/Gemfile.lock b/Gemfile.lock
index 9f97776..c702b0a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,8 @@ GEM
     multi_json (1.13.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
-    mustermann (1.0.2)
+    mustermann (1.1.0)
+      ruby2_keywords (~> 0.0.1)
     oauth2 (1.4.1)
       faraday (>= 0.8, < 0.16.0)
       jwt (>= 1.0, < 3.0)
@@ -42,8 +43,8 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     public_suffix (2.0.5)
-    rack (2.0.6)
-    rack-protection (2.0.2)
+    rack (2.0.8)
+    rack-protection (2.0.8.1)
       rack
     rake (11.2.2)
     rspec (3.8.0)
@@ -59,15 +60,16 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
+    ruby2_keywords (0.0.1)
     safe_yaml (1.0.4)
-    sinatra (2.0.2)
+    sinatra (2.0.8.1)
       mustermann (~> 1.0)
       rack (~> 2.0)
-      rack-protection (= 2.0.2)
+      rack-protection (= 2.0.8.1)
       tilt (~> 2.0)
     slop (3.6.0)
     thread_safe (0.3.5)
-    tilt (2.0.8)
+    tilt (2.0.10)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
     webmock (3.0.1)