diff --git a/.codeclimate.yml b/.codeclimate.yml
index 3e9ab5f8..a187069d 100644
--- a/.codeclimate.yml
+++ b/.codeclimate.yml
@@ -5,7 +5,7 @@ engines:
   bundler-audit:
     enabled: true
   duplication:
-    enabled: false
+    enabled: true
     config:
       languages:
         count_threshold: 3 # rule of three