diff --git a/data/category-ads b/data/category-ads
index 4aafc344..2cfae693 100644
--- a/data/category-ads
+++ b/data/category-ads
@@ -14,6 +14,7 @@ include:bytedance-ads
 include:category-ads-ir
 include:clearbitjs-ads
 include:dmm-ads
+include:duolingo-ads
 include:emogi-ads
 include:flurry-ads
 include:google-ads
diff --git a/data/duolingo b/data/duolingo
index 3b29b46f..afc5eeda 100644
--- a/data/duolingo
+++ b/data/duolingo
@@ -1,2 +1,4 @@
+include:duolingo-ads
+
 duolingo.com
 duolingo.cn @cn
diff --git a/data/duolingo-ads b/data/duolingo-ads
new file mode 100644
index 00000000..3374c076
--- /dev/null
+++ b/data/duolingo-ads
@@ -0,0 +1,4 @@
+ads-api.duolingo.com @ads
+excess.duolingo.com @ads
+metrics.duolingo.com @ads
+analytics.vpc.duolingo.com @ads