diff --git a/readme.md b/readme.md
index a7a6e01a..60b0c293 100644
--- a/readme.md
+++ b/readme.md
@@ -22,6 +22,8 @@ Simply upload your artifacts zip files into your own directory under `providers/
 * Validate your artifacts against the OpenQuantumSafe docker image.
 * Re-build and update the results HTML pages using both the automated results, and any results CSV files that you included.
 
+NOTE: expired certificates within the artifacts zips will show as failed against the OQS automated testing because there is no flag to `openssl verify` to ignore expiry.
+
 ## Folder structure of this repo
 
 The project's directory structure is as follows: