diff --git a/examples/Gemfile.lock b/examples/Gemfile.lock
index 046f576..5122c5b 100644
--- a/examples/Gemfile.lock
+++ b/examples/Gemfile.lock
@@ -14,18 +14,18 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2021.0901)
     multi_xml (0.6.0)
-    mustermann (1.1.1)
+    mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
-    rack (2.2.3)
-    rack-protection (2.1.0)
+    rack (2.2.4)
+    rack-protection (3.0.4)
       rack
     ruby2_keywords (0.0.5)
-    sinatra (2.1.0)
-      mustermann (~> 1.0)
-      rack (~> 2.2)
-      rack-protection (= 2.1.0)
+    sinatra (3.0.4)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.0.4)
       tilt (~> 2.0)
-    tilt (2.0.10)
+    tilt (2.0.11)
 
 PLATFORMS
   ruby