diff --git a/app/controllers/epp/base_controller.rb b/app/controllers/epp/base_controller.rb
index e9d58a4ed..ee8592c82 100644
--- a/app/controllers/epp/base_controller.rb
+++ b/app/controllers/epp/base_controller.rb
@@ -368,7 +368,7 @@ module Epp
     end
 
     def session_timeout_reached?
-      timeout = 5.minutes
+      timeout = ENV['epp_session_timeout_seconds'].to_i.seconds
       epp_session.updated_at < (Time.zone.now - timeout)
     end
 
diff --git a/config/application.yml.sample b/config/application.yml.sample
index 2cd19b768..c35a8a5bb 100644
--- a/config/application.yml.sample
+++ b/config/application.yml.sample
@@ -153,6 +153,8 @@ lhv_keystore_password:
 lhv_ca_file: # Needed only in dev mode
 lhv_dev_mode: 'false'
 
+epp_session_timeout_seconds: '300'
+
 # Since the keys for staging are absent from the repo, we need to supply them separate for testing.
 test:
   payments_seb_bank_certificate: 'test/fixtures/files/seb_bank_cert.pem'