diff --git a/Gemfile b/Gemfile
index b5c14c12..3993658a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'actionpack'
 gem "mongoid"
 
 # Use graphql gem for handle API
-gem 'graphql', "~> 2.5.20"
+gem 'graphql', "~> 2.5.21"
 
 group :development, :test do
   gem "pry-byebug"
diff --git a/Gemfile.lock b/Gemfile.lock
index 2ff14d35..1c7b4234 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,7 +52,7 @@ GEM
       cgi (>= 0.3.3)
     erubi (1.13.1)
     fiber-storage (1.0.0)
-    graphql (2.5.20)
+    graphql (2.5.21)
       base64
       fiber-storage
       logger
@@ -157,7 +157,7 @@ PLATFORMS
 DEPENDENCIES
   actionpack
   activemodel
-  graphql (~> 2.5.20)
+  graphql (~> 2.5.21)
   mongoid
   pry-byebug
   rspec-rails