diff --git a/examples/sinatra/Gemfile.lock b/examples/sinatra/Gemfile.lock
index d83b27ec..b9abe6cc 100644
--- a/examples/sinatra/Gemfile.lock
+++ b/examples/sinatra/Gemfile.lock
@@ -86,13 +86,13 @@ 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)
     os (1.1.1)
     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
     redis (4.4.0)
     retriable (3.1.2)
@@ -103,12 +103,12 @@ GEM
       faraday (>= 0.17.3, < 2.0)
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
-    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)
-    tilt (2.0.10)
+    tilt (2.0.11)
     tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
     zeitwerk (2.4.2)