diff --git a/lib/travis/api/app.rb b/lib/travis/api/app.rb
index 25af74ba..d9719090 100644
--- a/lib/travis/api/app.rb
+++ b/lib/travis/api/app.rb
@@ -200,7 +200,7 @@ module Travis::Api
 
         if Travis.config.logs_database
           pool_size = ENV['DATABASE_POOL_SIZE']
-          Travis.config.logs_database[:pool] = pool_size if pool_size
+          Travis.config.logs_database[:pool] = pool_size.to_i if pool_size
 
           Log.establish_connection 'logs_database'
           Log::Part.establish_connection 'logs_database'
diff --git a/lib/travis/sidekiq.rb b/lib/travis/sidekiq.rb
index 936c4653..bb9e3574 100644
--- a/lib/travis/sidekiq.rb
+++ b/lib/travis/sidekiq.rb
@@ -8,8 +8,8 @@ require 'travis/api/workers/job_restart'
 require 'travis/support/amqp'
 
 pool_size = ENV['SIDEKIQ_DB_POOL_SIZE'] || 5
-Travis.config.database[:pool] = pool_size
-Travis.config.logs_database[:pool] = pool_size
+Travis.config.database[:pool] = pool_size.to_i
+Travis.config.logs_database[:pool] = pool_size.to_i
 Travis::Database.connect
 
 if Travis.config.logs_database