diff --git a/bob/bio/face/extractor/opencv_caffe.py b/bob/bio/face/extractor/opencv_caffe.py
index 7634e4c13a870d297119515ae219678372759916..53ab52a6511985553ce6c70211995dac025a92fa 100644
--- a/bob/bio/face/extractor/opencv_caffe.py
+++ b/bob/bio/face/extractor/opencv_caffe.py
@@ -40,14 +40,12 @@ class opencv_model(TransformerMixin, BaseEstimator):
     .. note::
        This structure only can be used for CAFFE pretrained model.
 
-  **Parameters:**
-  use_gpu: True or False.
+
     """
 
-    def __init__(self, use_gpu=False, **kwargs):
+    def __init__(self, **kwargs):
         super().__init__(**kwargs)
         self.model = None
-        self.use_gpu = use_gpu
 
         internal_path = pkg_resources.resource_filename(
             __name__, os.path.join("data", "opencv_model"),
diff --git a/bob/bio/face/extractor/pytorch_model.py b/bob/bio/face/extractor/pytorch_model.py
index d784d7f48e6cd9c6eae1607b2a103940a01edfb7..2d7a5f1c14e263aac1c1eeed237afb465cee89ee 100644
--- a/bob/bio/face/extractor/pytorch_model.py
+++ b/bob/bio/face/extractor/pytorch_model.py
@@ -29,14 +29,12 @@ class pytorch_loaded_model(TransformerMixin, BaseEstimator):
   
   The extracted features can be combined with different the algorithms. 
 
-  **Parameters:**
-  use_gpu: True or False.
+
     """
 
-    def __init__(self, use_gpu=False, **kwargs):
+    def __init__(self, **kwargs):
         super().__init__(**kwargs)
         self.model = None
-        self.use_gpu = use_gpu
 
         internal_path = pkg_resources.resource_filename(
             __name__, os.path.join("data", "resnet"),
@@ -110,10 +108,9 @@ class pytorch_library_model(TransformerMixin, BaseEstimator):
   use_gpu: True or False.
     """
 
-    def __init__(self, model=None, use_gpu=False, **kwargs):
+    def __init__(self, model=None, **kwargs):
         super().__init__(**kwargs)
         self.model = model
-        self.use_gpu = use_gpu
 
         internal_path = pkg_resources.resource_filename(
             __name__, os.path.join("data", "resnet"),
diff --git a/bob/bio/face/extractor/tf_model.py b/bob/bio/face/extractor/tf_model.py
index ae39ebb45f65cd8601715f2de88e890c727df245..c690f2acb339c903aa56367e7ceffac8996062c9 100644
--- a/bob/bio/face/extractor/tf_model.py
+++ b/bob/bio/face/extractor/tf_model.py
@@ -30,14 +30,11 @@ class tf_model(TransformerMixin, BaseEstimator):
   The extracted features can be combined with different the algorithms. 
 
 
-  **Parameters:**
-  use_gpu: True or False.
     """
 
-    def __init__(self, use_gpu=False, **kwargs):
+    def __init__(self, **kwargs):
         super().__init__(**kwargs)
         self.model = None
-        self.use_gpu = use_gpu
 
         internal_path = pkg_resources.resource_filename(
             __name__, os.path.join("data", "resnet"),
diff --git a/conda/meta.yaml b/conda/meta.yaml
index 129c3dc245bd4919797d498c55bcbb7753cb9c88..6250242cefc4bbd94d530964896e8a0b02cc7957 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -43,8 +43,6 @@ requirements:
     - scikit-image {{ scikit_image }}
     - six {{ six }}
     - tensorflow {{ tensorflow }}  # [linux]
-    - mxnet {{ mxnet }}
-    - opencv-pyrhon {{ opencv_python }}
   run:
     - python
     - setuptools