diff --git a/.rubocop.yml b/.rubocop.yml
index 0ad83c9d..da914bc3 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -158,6 +158,10 @@ Lint/UselessAssignment:
 Lint/Void:
   Enabled: true
 
+# Do not use duplicated keys in hash literals.
+Lint/DuplicatedKey:
+  Enabled: true
+
 #################### Rails ###############################
 
 # Enforce Rails specific style