diff --git a/requirements.txt b/requirements.txt
index f62a5f8..55735de 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,5 +2,5 @@ connexion~=2.14.2
 requests
 zserio<3.0.0
 pyyaml
-pyzswagcl==1.6.4
+pyzswagcl==1.6.7post1
 openapi-spec-validator