diff --git a/Gemfile b/Gemfile
index 4fa8bf90..872b3e99 100644
--- a/Gemfile
+++ b/Gemfile
@@ -33,7 +33,7 @@ gem 'therubyracer', group: :therubyracer
 
 # Use --without <group> argument to skip unnecessary drivers
 gem 'sqlite3', group: :sqlite
-gem 'mysql2', '~> 0.5.3', group: :mysql
+gem 'mysql2', '~> 0.5.4', group: :mysql
 gem 'pg', '~> 1.3.5', group: :postgresql
 
 group :development do
diff --git a/Gemfile.lock b/Gemfile.lock
index 1fb64fce..c7f23b5a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -170,7 +170,7 @@ GEM
     minitest (5.15.0)
     minitest-stub-const (0.6)
     mocha (1.14.0)
-    mysql2 (0.5.3)
+    mysql2 (0.5.4)
     nio4r (2.5.8)
     nokogiri (1.13.6)
       mini_portile2 (~> 2.8.0)
@@ -349,7 +349,7 @@ DEPENDENCIES
   listen
   minitest-stub-const
   mocha
-  mysql2 (~> 0.5.3)
+  mysql2 (~> 0.5.4)
   pg (~> 1.3.5)
   puma (~> 5.6)
   rack-mini-profiler