diff --git a/pyproject.toml b/pyproject.toml
index 731b2a1f6..efcdbf8eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -102,7 +102,7 @@ dependencies = [
   "vat_moss_forked==2020.3.20.0.11.0",
   "vobject==0.9.*",
   "webauthn==2.2.*",
-  "zeep==4.2.*"
+  "zeep==4.3.*"
 ]
 
 [project.optional-dependencies]