diff --git a/TEST_MAPPING b/TEST_MAPPING
index 15c97a1..a16a674 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -14,6 +14,11 @@
       "path": "external/rust/crates/url"
     }
   ],
+  "postsubmit": [
+    {
+      "name": "doh_unit_test"
+    }
+  ],
   "presubmit": [
     {
       "name": "doh_unit_test"