diff --git a/Gemfile b/Gemfile
index b60b7ab4..7a327788 100644
--- a/Gemfile
+++ b/Gemfile
@@ -34,7 +34,7 @@ gem 'mini_racer', group: :therubyracer
 # Use --without <group> argument to skip unnecessary drivers
 gem 'sqlite3', group: :sqlite
 gem 'mysql2', '~> 0.5.6', group: :mysql
-gem 'pg', '~> 1.5.4', group: :postgresql
+gem 'pg', '~> 1.5.6', group: :postgresql
 
 group :development do
   gem 'spring', '~> 4'
diff --git a/Gemfile.lock b/Gemfile.lock
index 5c607026..1c49cf76 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -200,7 +200,7 @@ GEM
     parser (3.2.2.4)
       ast (~> 2.4.1)
       racc
-    pg (1.5.4)
+    pg (1.5.6)
     puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.8.0)
@@ -377,7 +377,7 @@ DEPENDENCIES
   minitest-stub-const
   mocha
   mysql2 (~> 0.5.6)
-  pg (~> 1.5.4)
+  pg (~> 1.5.6)
   puma (~> 6.4)
   rack-mini-profiler
   rails (~> 6.1)