diff --git a/Rules/Duolingo/duolingo.yaml b/Rules/Duolingo/duolingo.yaml
new file mode 100644
index 0000000..6e9ada4
--- /dev/null
+++ b/Rules/Duolingo/duolingo.yaml
@@ -0,0 +1,6 @@
+# Duolingo
+# https://www.duolingo.com/
+
+payload:
+  - DOMAIN-SUFFIX,duolingo.com
+  - DOMAIN-SUFFIX,duolingo.cn