diff --git a/Gemfile b/Gemfile
index 95821ff..07b71d4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem "puma", "~> 6.0"
 gem "eth", "~> 0.5"
 
 # CORS
-gem "rack-cors", "~> 2.0"
+gem "rack-cors", "~> 3.0"
 
 # JSON serialization
 gem "jbuilder", "~> 2.7"
diff --git a/Gemfile.lock b/Gemfile.lock
index facfacb..82142fd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -178,8 +178,9 @@ GEM
       nio4r (~> 2.0)
     racc (1.8.1)
     rack (3.2.7)
-    rack-cors (2.0.2)
-      rack (>= 2.0.0)
+    rack-cors (3.0.0)
+      logger
+      rack (>= 3.0.14)
     rack-session (2.1.2)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)
@@ -281,7 +282,7 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   pg (~> 1.5)
   puma (~> 6.0)
-  rack-cors (~> 2.0)
+  rack-cors (~> 3.0)
   rails (~> 8.1.4)
   rspec-rails (~> 8.0)
   shoulda-matchers (~> 5.0)