diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index dd53a4200c..43c7a71208 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -23,6 +23,7 @@ repos:
         additional_dependencies: ['git+https://github.com/numpy/numpy-stubs', 'types-requests', 'types-atomicwrites',
                                   'types-pycurl']
         args:
+        - --warn-redundant-casts
         - --warn-unreachable
 -   repo: https://github.com/PyCQA/flake8
     rev: 4.0.1
diff --git a/selfdrive/hardware/tici/agnos.py b/selfdrive/hardware/tici/agnos.py
index a28b13ac4a..e36ef9cfbb 100755
--- a/selfdrive/hardware/tici/agnos.py
+++ b/selfdrive/hardware/tici/agnos.py
@@ -16,7 +16,7 @@ class StreamingDecompressor:
   def __init__(self, url: str) -> None:
     self.buf = b""
 
-    self.req = requests.get(url, stream=True, headers={'Accept-Encoding': None})
+    self.req = requests.get(url, stream=True, headers={'Accept-Encoding': None})  # type: ignore
     self.it = self.req.iter_content(chunk_size=1024 * 1024)
     self.decompressor = lzma.LZMADecompressor(format=lzma.FORMAT_AUTO)
     self.eof = False