diff --git a/lib/modules/datasource/repology/readme.md b/lib/modules/datasource/repology/readme.md
index 7488e166b1f96858b1b7439a8a61aef805c5b436..7160d9fe5cac85a3e6299ce7bf2fd858f86b8ad6 100644
--- a/lib/modules/datasource/repology/readme.md
+++ b/lib/modules/datasource/repology/readme.md
@@ -1,5 +1,9 @@
 [Repology](https://repology.org/) supports looking up package versions from a wide variety of package repositories and can be used in combination with [regex managers](https://docs.renovatebot.com/modules/manager/regex/) to keep dependencies up-to-date which are not specifically supported by Renovate.
 
+<!-- prettier-ignore -->
+!!! warning
+    Repology has blocked lookups from the hosted Renovate App, so for now you can use this datasource only for self-hosted.
+
 To specify which specific repository should be queried when looking up a package, the `packageName` has to have the repository identifier and the package name itself, separated by a slash. As an example, `alpine_3_12/gcc` would look for a binary or source package called `gcc` within the `alpine_3_12` repository.
 
 A [list of all supported repositories](https://repology.org/repositories/statistics) can be found on the Repology homepage. To determine the correct identifier, click on a repository of your choice and make note of the identifier in the URL: `https://repology.org/repository/<identifier>`