diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc6c4588..d29d96df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file.
 
-## Unreleased
+## 1.3.9
 
 ### Added — Model evaluations SDK & CLI
 
@@ -45,6 +45,12 @@ The endpoints require the `model-eval:read` scope. The base URL is
 configurable via `API_URL` (set to `https://localapi.roboflow.one` to
 test against a local API server).
 
+### Fixed
+- rf-detr model upload: accept checkpoints whose `args` is a plain dict (e.g. EMA checkpoints) when extracting class names, instead of raising `TypeError` from `vars()`.
+
+### Changed
+- Pin `typer<0.26` and declare `click` explicitly: typer 0.26 vendors its own click and drops the external dependency, which broke the CLI and its type checks.
+
 ## 1.3.7
 
 ### Added — Soft-delete / Trash support
diff --git a/requirements-slim.txt b/requirements-slim.txt
index 9709e296..9c4d021e 100644
--- a/requirements-slim.txt
+++ b/requirements-slim.txt
@@ -6,7 +6,8 @@ tqdm>=4.41.0
 PyYAML>=5.3.1
 requests_toolbelt
 filetype
-typer>=0.12.0
+typer>=0.12.0,<0.26  # 0.26 vendors click, dropping the external dep the CLI imports
+click>=8.0
 python-dateutil
 python-dotenv
 six
diff --git a/requirements.txt b/requirements.txt
index 79cd4bb2..3984d070 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,4 +19,5 @@ tqdm>=4.41.0
 PyYAML>=5.3.1
 requests_toolbelt
 filetype
-typer>=0.12.0
+typer>=0.12.0,<0.26  # 0.26 vendors click, dropping the external dep the CLI imports
+click>=8.0
diff --git a/roboflow/util/model_processor.py b/roboflow/util/model_processor.py
index 674170ae..4ff0ce1a 100644
--- a/roboflow/util/model_processor.py
+++ b/roboflow/util/model_processor.py
@@ -414,7 +414,9 @@ def get_classnames_txt_for_rfdetr(model_path: str, pt_file: str, checkpoint=None
         import torch
 
         checkpoint = torch.load(os.path.join(model_path, pt_file), map_location="cpu", weights_only=False)
-    args = vars(checkpoint["args"])
+    raw_args = checkpoint["args"]
+    # args may be a plain dict in some checkpoints
+    args = raw_args if isinstance(raw_args, dict) else vars(raw_args)
     if "class_names" in args:
         with open(class_names_path, "w") as f:
             for class_name in args["class_names"]:
diff --git a/tests/util/test_model_processor.py b/tests/util/test_model_processor.py
index 951abe29..37ecb186 100644
--- a/tests/util/test_model_processor.py
+++ b/tests/util/test_model_processor.py
@@ -1,3 +1,5 @@
+import os
+import tempfile
 import unittest
 from types import SimpleNamespace
 
@@ -5,6 +7,7 @@
 from roboflow.util.model_processor import (
     _detect_rfdetr_task,
     _detect_yolo_task,
+    get_classnames_txt_for_rfdetr,
     task_of_model_type,
 )
 
@@ -84,5 +87,22 @@ def test_unrecognized_returns_none(self):
         self.assertIsNone(_detect_rfdetr_task({"args": SimpleNamespace(other=1)}))
 
 
+class GetClassnamesTxtForRfdetrTest(unittest.TestCase):
+    def _classnames(self, args):
+        with tempfile.TemporaryDirectory() as model_path:
+            get_classnames_txt_for_rfdetr(model_path, "weights.pt", checkpoint={"args": args})
+            with open(os.path.join(model_path, "class_names.txt")) as f:
+                return f.read().splitlines()
+
+    def test_dict_args(self):
+        self.assertEqual(self._classnames({"class_names": ["cat", "dog"]}), ["background_class83422", "cat", "dog"])
+
+    def test_namespace_args(self):
+        self.assertEqual(
+            self._classnames(SimpleNamespace(class_names=["cat", "dog"])),
+            ["background_class83422", "cat", "dog"],
+        )
+
+
 if __name__ == "__main__":
     unittest.main()