diff --git a/.yamllint/rules.yml b/.yamllint/rules.yml
index bdcac0e..94413ad 100644
--- a/.yamllint/rules.yml
+++ b/.yamllint/rules.yml
@@ -1,6 +1,10 @@
 extends: relaxed
 
 rules:
+  anchors:
+    forbid-undeclared-aliases: true
+    forbid-duplicated-anchors: true
+
   # 255 chars should be enough, but don't fail if a line is longer
   line-length:
     max: 255