diff --git a/Gemfile b/Gemfile
index c139d31..de49ed8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 gem 'sinatra', '~> 1.4.5'
 gem 'github_api', '~> 0.13.0'
 gem "redis", "~> 3.3.3"
-gem 'hiredis', '~> 0.6.0'
+gem 'hiredis', '~> 0.6.3'
 gem 'haml', '~> 4.0.6'
 gem 'json', '~> 2.1'
 gem 'sidekiq', '~> 5.0.4'
diff --git a/Gemfile.lock b/Gemfile.lock
index d679555..6e60222 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,7 +20,7 @@ GEM
     haml (4.0.7)
       tilt
     hashie (3.4.3)
-    hiredis (0.6.1)
+    hiredis (0.6.3)
     json (2.1.0)
     jwt (1.5.2)
     mail (2.6.6)
@@ -78,7 +78,7 @@ DEPENDENCIES
   dogstatsd-ruby (~> 3.0.0)
   github_api (~> 0.13.0)
   haml (~> 4.0.6)
-  hiredis (~> 0.6.0)
+  hiredis (~> 0.6.3)
   json (~> 2.1)
   mail (~> 2.6.6)
   newrelic-redis (~> 2.0.0)