diff --git a/build.gradle b/build.gradle
index b7ec0bad..79c933ea 100644
--- a/build.gradle
+++ b/build.gradle
@@ -175,6 +175,8 @@ project.tasks.compileJava.dependsOn processSpring
 
 // Rename javax to jakarta in OpenApi generated java files because
 // io.openapiprocessor.openapi-processor 2022.2 does not yet support the openapiprocessor useSpringBoot3 config option.
+// TODO.impl: Upgrade to io.openapiprocessor.openapi-processor >= 2024.2
+//  and use either `bean-validation: true` in api-mapping.yaml or `useSpringBoot3 true` (not sure where exactly).
 task openApiGenerate(type: Copy) {
     from "$buildDir/generated/sources/openapi-javax"
     into "$buildDir/generated/sources/openapi"