diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index b21ca53..c75c45d 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.8
+FROM python:3.9
 
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
@@ -7,7 +7,7 @@ RUN apt-get update \
     && rm -rf /var/lib/apt/lists/*
 
 RUN python -m pip install --upgrade colorlog black pylint
-RUN python -m pip install --upgrade git+git://github.com/home-assistant/home-assistant.git@dev
+RUN python -m pip install --upgrade homeassistant
 RUN cd && mkdir -p /config/custom_components
 
 
diff --git a/custom_components/drivvo/sensor.py b/custom_components/drivvo/sensor.py
index df8c7b3..2d0736b 100755
--- a/custom_components/drivvo/sensor.py
+++ b/custom_components/drivvo/sensor.py
@@ -145,7 +145,7 @@ def total_amount_of_supplies(self):
         return len(self._supplies)
 
     @property
-    def device_state_attributes(self):
+    def extra_state_attributes(self):
         """Atributos."""
         return {
             "veiculo": self._model,