diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 2235d69..197cf4d 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -4,7 +4,7 @@
 #-------------------------------------------------------------------------------------------------------------
 
 # Update the VARIANT arg in devcontainer.json to pick a Python version: 3, 3.8, 3.7, 3.6
-ARG VARIANT=3
+ARG VARIANT=3.12
 FROM mcr.microsoft.com/vscode/devcontainers/python:${VARIANT}
 
 # [Optional] If your requirements rarely change, uncomment this section to add them to the image.
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 21142b0..ae98475 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -4,7 +4,7 @@
     "dockerfile": "Dockerfile",
     "context": "..",
     "args": {
-      "VARIANT": "3.8"
+      "VARIANT": "3.12"
     }
   },
   "settings": {
diff --git a/.github/workflows/pulls.yaml b/.github/workflows/pulls.yaml
index 6845648..273e702 100644
--- a/.github/workflows/pulls.yaml
+++ b/.github/workflows/pulls.yaml
@@ -5,7 +5,7 @@ on: pull_request
 jobs:
   pytest:
     runs-on: ubuntu-latest
-    container: python:3.8
+    container: python:3.12
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
diff --git a/.github/workflows/pypi-upload.yaml b/.github/workflows/pypi-upload.yaml
index 33ec613..ae7a1a9 100644
--- a/.github/workflows/pypi-upload.yaml
+++ b/.github/workflows/pypi-upload.yaml
@@ -7,7 +7,7 @@ on:
 jobs:
   build-and-publish:
     runs-on: ubuntu-20.04
-    container: python:3.8
+    container: python:3.12
     steps:
     - uses: actions/checkout@v2
       with:
diff --git a/adext/adext.py b/adext/adext.py
index a209083..7c3b272 100644
--- a/adext/adext.py
+++ b/adext/adext.py
@@ -2,6 +2,8 @@
 Extends the AlarmDecoder class to include helper methods for HomeAssistant
 """
 
+import asyncio
+
 from alarmdecoder.decoder import AlarmDecoder
 from alarmdecoder.panels import DSC, ADEMCO as HONEYWELL
 
@@ -15,6 +17,17 @@ class AdExt(AlarmDecoder):
     Extended AlarmDecoder class
     """
 
+    def __init__(self, device, ignore_message_states=False, ignore_lrr_states=True):
+        super().__init__(device, ignore_message_states, ignore_lrr_states)
+        self._event = asyncio.Event()
+
+    def _handle_version(self, data):
+        super()._handle_version(data)
+        self._event.set()
+
+    async def is_init(self):
+        return (await self._event.wait())
+
     def _get_arm_sequence(
         self, arm_mode, code, code_arm_required, auto_bypass, alt_night_mode=False,
     ):