diff --git a/Gemfile b/Gemfile
index 464a3c3580118e..c2343b4938d7ca 100644
--- a/Gemfile
+++ b/Gemfile
@@ -142,7 +142,7 @@ group :development do
   gem 'memory_profiler'
   gem 'rubocop', '~> 0.86', require: false
   gem 'rubocop-rails', '~> 2.6', require: false
-  gem 'brakeman', '~> 4.9', require: false
+  gem 'brakeman', '~> 5.3', require: false
   gem 'bundler-audit', '~> 0.7', require: false
 
   gem 'capistrano', '~> 3.14'
diff --git a/Gemfile.lock b/Gemfile.lock
index bf47faabec8fb2..586cf6e90df8a1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,7 +107,7 @@ GEM
       ffi (~> 1.10.0)
     bootsnap (1.4.8)
       msgpack (~> 1.0)
-    brakeman (4.9.0)
+    brakeman (5.3.1)
     browser (4.2.0)
     builder (3.2.4)
     bullet (6.1.0)
@@ -353,7 +353,9 @@ GEM
     mime-types (3.3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2020.0512)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
@@ -687,7 +689,7 @@ DEPENDENCIES
   binding_of_caller (~> 0.7)
   blurhash (~> 0.1)
   bootsnap (~> 1.4)
-  brakeman (~> 4.9)
+  brakeman (~> 5.3)
   browser
   bullet (~> 6.1)
   bundler-audit (~> 0.7)