diff --git a/requirements.txt b/requirements.txt
index 7c82d69..b5c015b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,3 +47,4 @@ git+https://github.com/openprocurement/barbecue.git
 git+https://github.com/openprocurement/python-json-patch.git
 git+https://github.com/openprocurement/rfc6266.git
 -e git+https://github.com/openprocurement/openprocurement.api.git@master#egg=openprocurement.api
+idna>=3.7 # not directly required, pinned by Snyk to avoid a vulnerability