diff --git a/.rubocop.yml b/.rubocop.yml
index f196c6a6..c6b31025 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -162,6 +162,10 @@ Lint/UselessAssignment:
 Lint/Void:
   Enabled: true
 
+# Do not use duplicated keys in hash literals.
+Lint/DuplicatedKey:
+  Enabled: true
+
 #################### Rails ###############################
 
 # Enforce Rails specific style