diff --git a/requirements/requirements.in b/requirements/requirements.in
index 5e25a766da..243858299a 100644
--- a/requirements/requirements.in
+++ b/requirements/requirements.in
@@ -55,7 +55,7 @@ python-dsv-sdk>=1.0.4
 python-tss-sdk>=1.2.1
 python-ldap
 pyyaml>=6.0.1
-pyzstd
+pyzstd  # otel collector log file compression library
 receptorctl
 social-auth-core[openidconnect]==4.4.2  # see UPGRADE BLOCKERs
 social-auth-app-django==5.4.0  # see UPGRADE BLOCKERs