diff --git a/README.md b/README.md
index 55a3d27..8e1050d 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@ This action deletes versions of a package from [GitHub Packages](https://github.
   # The number of pre-release versions to keep can be set by using `min-versions-to-keep` value with this.
   # When `min-versions-to-keep` is 0, all pre-release versions get deleted.
   # Defaults to false.
-  # Cannot be used with `num-old-versions-to-delete`.
+  # Cannot be used with `num-old-versions-to-delete` and `ignore-versions`.
   delete-only-pre-release-versions:
 
   # The token used to authenticate with GitHub Packages.