diff --git a/Gemfile.lock b/Gemfile.lock
index b0343e7..b93521b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -98,7 +98,7 @@ GEM
     minitest (5.14.4)
     multi_json (1.15.0)
     multipart-post (2.1.1)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     naught (1.1.0)
     netrc (0.11.0)
@@ -111,8 +111,8 @@ GEM
       pry (~> 0.13.0)
     public_suffix (4.0.6)
     raabro (1.4.0)
-    rack (2.2.3)
-    rack-protection (2.1.0)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rake (13.0.6)
     rest-client (1.8.0)
@@ -130,16 +130,16 @@ GEM
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
     simple_oauth (0.3.1)
-    sinatra (2.1.0)
-      mustermann (~> 1.0)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.1.0)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    sinatra-contrib (2.1.0)
+    sinatra-contrib (2.2.3)
       multi_json
-      mustermann (~> 1.0)
-      rack-protection (= 2.1.0)
-      sinatra (= 2.1.0)
+      mustermann (~> 2.0)
+      rack-protection (= 2.2.3)
+      sinatra (= 2.2.3)
       tilt (~> 2.0)
     smashing (1.3.5)
       coffee-script (~> 2.4)
@@ -162,7 +162,7 @@ GEM
       rack (>= 1, < 3)
     thor (1.1.0)
     thread_safe (0.3.6)
-    tilt (2.0.10)
+    tilt (2.0.11)
     twitter (7.0.0)
       addressable (~> 2.3)
       buftok (~> 0.2.0)