diff --git a/requirements.txt b/requirements.txt
index e784be8c..75226eb1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 pyOpenSSL
 secrets
 bcrypt
-flask 
\ No newline at end of file
+flask 
+python-ldap>=3.4.5 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file