diff --git a/Gemfile b/Gemfile
index 6c334c6..8e29f59 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 gem 'activesupport'
-gem 'sinatra', '~> 4.1.0'
+gem 'sinatra', '~> 4.2.0'
 
 gem "puma"
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 90c3715..ecb4e87 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,8 +37,8 @@ GEM
       slop (~> 3.0)
     puma (6.6.1)
       nio4r (~> 2.0)
-    rack (3.2.0)
-    rack-protection (4.1.1)
+    rack (3.2.3)
+    rack-protection (4.2.0)
       base64 (>= 0.1.0)
       logger (>= 1.6.0)
       rack (>= 3.0.0, < 4)
@@ -47,11 +47,11 @@ GEM
       rack (>= 3.0.0)
     ruby2_keywords (0.0.5)
     securerandom (0.4.1)
-    sinatra (4.1.1)
+    sinatra (4.2.0)
       logger (>= 1.6.0)
       mustermann (~> 3.0)
       rack (>= 3.0.0, < 4)
-      rack-protection (= 4.1.1)
+      rack-protection (= 4.2.0)
       rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
     slop (3.6.0)
@@ -69,7 +69,7 @@ DEPENDENCIES
   pry
   pry-remote
   puma
-  sinatra (~> 4.1.0)
+  sinatra (~> 4.2.0)
 
 BUNDLED WITH
    2.6.2