Add yara version requirement in the README file

1 files changed, 4 insertions, 0 deletions

diff --git a/README.md b/README.md
index 67dad30..dae03b9 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,10 @@ Or if you prefer to use `yara`:
 $ yara -r ./malwares.yara /var/www
 ```
 
+Please keep in mind that you should use at least YARA 3.2 because we're using
+[hashes]( https://yara.readthedocs.org/en/latest/modules/hash.html ) for the
+whitelist system.
+
 ## Whitelisting
 
 Check the [whitelist.yara]( https://github.com/nbs-system/php-malware-finder/blob/master/whitelist.yara ) file.