diff --git a/pyproject.toml b/pyproject.toml
index 18b1a53..e2b280e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ dependencies = [
   "capellambse",
   "click",
   "PyYAML",
-  "polarion-rest-api-client @ git+https://github.com/DSD-DBS/polarion-rest-api-client.git@feat-add-attachments-workitem-relations",
+  "polarion-rest-api-client @ git+https://github.com/DSD-DBS/polarion-rest-api-client.git@feat-serialize-attachments",
   "requests",
   "cairosvg",
 ]