diff --git a/conda-store-server/pyproject.toml b/conda-store-server/pyproject.toml
index 5726afb07..371049002 100644
--- a/conda-store-server/pyproject.toml
+++ b/conda-store-server/pyproject.toml
@@ -58,6 +58,7 @@ dependencies = [
   "constructor",
   # artifact storage
   "minio",
+  "platformdirs >=4.0,<5.0a0"
 ]
 dynamic = ["version"]