diff --git a/Gemfile.lock b/Gemfile.lock
index 7493a42..384e68c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,25 +4,25 @@ GEM
     builder (3.2.4)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     nokogiri (1.10.10-x86-mingw32)
       mini_portile2 (~> 2.4.0)
-    rack (2.2.3)
-    rack-protection (2.0.8.1)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rake (13.0.1)
-    ruby2_keywords (0.0.2)
-    sinatra (2.0.8.1)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.8.1)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    tilt (2.0.10)
+    tilt (2.0.11)
 
 PLATFORMS
   ruby