diff --git a/.github/workflows/conda-test.yml b/.github/workflows/conda-test.yml
index 0890bba5..089f55f0 100644
--- a/.github/workflows/conda-test.yml
+++ b/.github/workflows/conda-test.yml
@@ -41,7 +41,7 @@ jobs:
         shell: bash
 
       - name: Caching of the happypose installation and data
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             ${{ env.CONDA }}/envs
diff --git a/.github/workflows/pip-test.yml b/.github/workflows/pip-test.yml
index c82ce94f..585ba091 100644
--- a/.github/workflows/pip-test.yml
+++ b/.github/workflows/pip-test.yml
@@ -28,7 +28,7 @@ jobs:
           sudo apt-get install -y -qq libjpeg-dev
 
       - name: Caching of the happypose installation and data
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: local_data
           key: data
diff --git a/.github/workflows/uv-test.yml b/.github/workflows/uv-test.yml
index a98e6968..f0689444 100644
--- a/.github/workflows/uv-test.yml
+++ b/.github/workflows/uv-test.yml
@@ -28,7 +28,7 @@ jobs:
           sudo apt-get install -y -qq libjpeg-dev
 
       - name: Caching of the happypose installation and data
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: local_data
           key: data
diff --git a/happypose/toolbox/inference/utils.py b/happypose/toolbox/inference/utils.py
index e375ee05..1ebade04 100644
--- a/happypose/toolbox/inference/utils.py
+++ b/happypose/toolbox/inference/utils.py
@@ -192,7 +192,7 @@ def filter_detections(
     detections: DetectionsType,
     labels: Optional[List[str]] = None,
     one_instance_per_class: bool = False,
-    detection_th: float = None,
+    detection_th: Optional[float] = None,
 ) -> DetectionsType:
     """Filter detections based on kwargs."""