diff --git a/webapp/ruby/Gemfile b/webapp/ruby/Gemfile
index a3c25ff50..5cbd7319a 100644
--- a/webapp/ruby/Gemfile
+++ b/webapp/ruby/Gemfile
@@ -7,4 +7,5 @@ gem "foreman"
 gem "unicorn"
 gem "mysql2"
 gem "rack-flash3"
+gem 'connection_pool'
 gem "dalli"
diff --git a/webapp/ruby/Gemfile.lock b/webapp/ruby/Gemfile.lock
index e1912bb5e..48b6f0da0 100644
--- a/webapp/ruby/Gemfile.lock
+++ b/webapp/ruby/Gemfile.lock
@@ -1,7 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    dalli (2.7.11)
+    connection_pool (2.2.5)
+    dalli (3.2.0)
     foreman (0.87.2)
     kgio (2.11.3)
     multi_json (1.15.0)
@@ -35,6 +36,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
+  connection_pool
   dalli
   foreman
   mysql2