diff --git a/core/src/test/java/google/registry/rdap/RdapDomainActionTest.java b/core/src/test/java/google/registry/rdap/RdapDomainActionTest.java
index bc4c5d801..d6b402853 100644
--- a/core/src/test/java/google/registry/rdap/RdapDomainActionTest.java
+++ b/core/src/test/java/google/registry/rdap/RdapDomainActionTest.java
@@ -45,7 +45,12 @@ import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
-/** Unit tests for {@link RdapDomainAction}. */
+/**
+ * Unit tests for {@link RdapDomainAction}.
+ *
+ * <p>TODO(b/26872828): The next time we do any work on RDAP, consider adding the APNIC RDAP
+ * conformance checker to the unit test suite.
+ */
 class RdapDomainActionTest extends RdapActionBaseTestCase<RdapDomainAction> {
 
   RdapDomainActionTest() {