diff --git a/Gemfile b/Gemfile
index 2ff62d7..6694c18 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ ruby "3.2.2"
 
 gem "puma"
 gem "rake"
-gem "sinatra", "~> 3.0"
+gem "sinatra", "~> 4.2"
 
 # Mongo DB
 gem "mongo"
diff --git a/Gemfile.lock b/Gemfile.lock
index d6358e5..2f80c9f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,6 +22,7 @@ GEM
     listen (3.8.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
+    logger (1.7.0)
     method_source (1.0.0)
     minitest (5.20.0)
     minitest-color (0.0.2)
@@ -45,10 +46,14 @@ GEM
     puma (6.4.3)
       nio4r (~> 2.0)
     racc (1.7.3)
-    rack (2.2.17)
-    rack-protection (3.2.0)
+    rack (3.2.3)
+    rack-protection (4.2.0)
       base64 (>= 0.1.0)
-      rack (~> 2.2, >= 2.2.4)
+      logger (>= 1.6.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.1.1)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0)
     rack-test (2.1.0)
       rack (>= 1.3)
     rainbow (3.1.1)
@@ -81,10 +86,12 @@ GEM
       rubocop (~> 1.0)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
-    sinatra (3.2.0)
+    sinatra (4.2.0)
+      logger (>= 1.6.0)
       mustermann (~> 3.0)
-      rack (~> 2.2, >= 2.2.4)
-      rack-protection (= 3.2.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.2.0)
+      rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
     tilt (2.6.1)
     unicode-display_width (2.5.0)
@@ -112,7 +119,7 @@ DEPENDENCIES
   rubocop
   rubocop-minitest
   rubocop-rake
-  sinatra (~> 3.0)
+  sinatra (~> 4.2)
   webmock
 
 RUBY VERSION