diff --git a/Gemfile.lock b/Gemfile.lock
index 29f3111..7519d24 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -240,9 +240,12 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (5.0.4)
     racc (1.7.3)
-    rack (2.2.6.4)
-    rack-protection (3.0.4)
-      rack
+    rack (3.0.9.1)
+    rack-protection (4.0.0)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.0.0)
+      rack (>= 3.0.0)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -261,16 +264,17 @@ GEM
       faraday (>= 0.17.3, < 3)
     simpleidn (0.2.1)
       unf (~> 0.1.4)
-    sinatra (3.0.4)
+    sinatra (4.0.0)
       mustermann (~> 3.0)
-      rack (~> 2.2, >= 2.2.4)
-      rack-protection (= 3.0.4)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.0.0)
+      rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    sinatra-contrib (3.0.4)
-      multi_json
+    sinatra-contrib (4.0.0)
+      multi_json (>= 0.0.2)
       mustermann (~> 3.0)
-      rack-protection (= 3.0.4)
-      sinatra (= 3.0.4)
+      rack-protection (= 4.0.0)
+      sinatra (= 4.0.0)
       tilt (~> 2.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)