diff --git a/data/category-companies b/data/category-companies
index 97eecd48..cebe4db4 100644
--- a/data/category-companies
+++ b/data/category-companies
@@ -19,6 +19,7 @@ include:cloudcone
 include:collabora
 include:dell
 include:digitalocean
+include:duolingo
 include:faronics
 include:gigabyte
 include:godaddy
diff --git a/data/duolingo b/data/duolingo
new file mode 100644
index 00000000..3b29b46f
--- /dev/null
+++ b/data/duolingo
@@ -0,0 +1,2 @@
+duolingo.com
+duolingo.cn @cn