diff --git a/Gemfile.lock b/Gemfile.lock
index 0fbbe9a..e8647c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,6 @@ GEM
       zeitwerk (~> 2.2, >= 2.2.2)
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
-    backports (3.15.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -213,6 +212,8 @@ GEM
       jekyll-seo-tag (~> 2.1)
     minitest (5.16.3)
     multi_json (1.14.1)
+    mustermann (3.0.0)
+      ruby2_keywords (~> 0.0.1)
     nokogiri (1.13.9)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
@@ -223,11 +224,9 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (3.1.1)
     racc (1.6.0)
-    rack (1.6.12)
-    rack-protection (1.5.5)
+    rack (2.2.4)
+    rack-protection (3.0.2)
       rack
-    rack-test (2.0.2)
-      rack (>= 1.3)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -245,17 +244,17 @@ GEM
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
-    sinatra (1.4.8)
-      rack (~> 1.5)
-      rack-protection (~> 1.4)
-      tilt (>= 1.3, < 3)
-    sinatra-contrib (1.4.7)
-      backports (>= 2.0)
+    sinatra (3.0.2)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.0.2)
+      tilt (~> 2.0)
+    sinatra-contrib (3.0.2)
       multi_json
-      rack-protection
-      rack-test
-      sinatra (~> 1.4.0)
-      tilt (>= 1.3, < 3)
+      mustermann (~> 3.0)
+      rack-protection (= 3.0.2)
+      sinatra (= 3.0.2)
+      tilt (~> 2.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     thread_safe (0.3.6)