diff --git a/Gemfile b/Gemfile
index 199f8263..b9caf3ca 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ ruby ">= 3.1.4", "< 3.5"
 
 gem "rails", "~> 7.2.2"
 
-gem "mysql2", "~> 0.5.6"
+gem "mysql2", "~> 0.5.7"
 # Use Puma as the app server
 gem "puma", "~> 6.6"
 # But we use passenger in production
diff --git a/Gemfile.lock b/Gemfile.lock
index 5bd02fe8..13abf7f9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -194,7 +194,8 @@ GEM
     mini_mime (1.1.5)
     minitest (5.26.0)
     msgpack (1.8.0)
-    mysql2 (0.5.6)
+    mysql2 (0.5.7)
+      bigdecimal
     net-imap (0.5.9)
       date
       net-protocol
@@ -416,7 +417,7 @@ DEPENDENCIES
   jbuilder (~> 2.14)
   jsbundling-rails
   listen (>= 3.0.5, < 3.10)
-  mysql2 (~> 0.5.6)
+  mysql2 (~> 0.5.7)
   passenger (~> 6.0, >= 6.0.27)
   puma (~> 6.6)
   rails (~> 7.2.2)