diff --git a/.github/workflows/pythonapp.yml b/.github/workflows/pythonapp.yml
new file mode 100644
index 0000000..c23a7cc
--- /dev/null
+++ b/.github/workflows/pythonapp.yml
@@ -0,0 +1,26 @@
+name: Python application
+
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.7
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install flake8
+    - name: Lint with flake8
+      run: |
+        flake8 . --count --max-line-length=79 --statistics
diff --git a/main.py b/main.py
index 3990d24..86f7458 100644
--- a/main.py
+++ b/main.py
@@ -2,7 +2,6 @@
 
 from os import path
 import functools
-import gateway_addon
 import signal
 import sys
 import time
@@ -12,10 +11,6 @@
 from pkg.tide_calendar_adapter import TideCalendarAdapter  # noqa
 
 
-_API_VERSION = {
-    'min': 2,
-    'max': 2,
-}
 _ADAPTER = None
 
 print = functools.partial(print, flush=True)
@@ -30,11 +25,6 @@ def cleanup(signum, frame):
 
 
 if __name__ == '__main__':
-    if gateway_addon.API_VERSION < _API_VERSION['min'] or \
-            gateway_addon.API_VERSION > _API_VERSION['max']:
-        print('Unsupported API version.')
-        sys.exit(0)
-
     signal.signal(signal.SIGINT, cleanup)
     signal.signal(signal.SIGTERM, cleanup)
     _ADAPTER = TideCalendarAdapter(verbose=True)
diff --git a/manifest.json b/manifest.json
new file mode 100644
index 0000000..cb4baa6
--- /dev/null
+++ b/manifest.json
@@ -0,0 +1,49 @@
+{
+  "author": "Mozilla IoT",
+  "description": "Tide calendar for Mozilla WebThings Gateway",
+  "gateway_specific_settings": {
+    "webthings": {
+      "exec": "python3 {path}/main.py",
+      "primary_type": "adapter",
+      "strict_max_version": "*",
+      "strict_min_version": "0.10.0"
+    }
+  },
+  "homepage_url": "https://github.com/mozilla-iot/tide-calendar-adapter",
+  "id": "tide-calendar-adapter",
+  "license": "MPL-2.0",
+  "manifest_version": 1,
+  "name": "Tide Calendar",
+  "options": {
+    "default": {
+      "stations": [],
+      "unit": "ft"
+    },
+    "schema": {
+      "type": "object",
+      "required": [
+        "stations",
+        "unit"
+      ],
+      "properties": {
+        "stations": {
+          "type": "array",
+          "description": "List of NOAA station IDs",
+          "items": {
+            "type": "integer"
+          }
+        },
+        "unit": {
+          "type": "string",
+          "description": "Water level unit system",
+          "enum": [
+            "english",
+            "metric"
+          ]
+        }
+      }
+    }
+  },
+  "short_name": "Tide",
+  "version": "0.2.0"
+}
diff --git a/package.json b/package.json
index 3d8b94e..bede269 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "tide-calendar-adapter",
   "display_name": "Tide Calendar",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "Tide calendar for Mozilla WebThings Gateway",
   "author": "Mozilla IoT",
   "main": "main.py",
@@ -23,9 +23,11 @@
   },
   "files": [
     "LICENSE",
+    "README.md",
     "SHA256SUMS",
     "lib",
     "main.py",
+    "manifest.json",
     "pkg/__init__.py",
     "pkg/tide_calendar_adapter.py",
     "pkg/tide_calendar_device.py",
diff --git a/package.sh b/package.sh
index ab43f60..a169be7 100755
--- a/package.sh
+++ b/package.sh
@@ -5,26 +5,22 @@ set -e
 version=$(grep version package.json | cut -d: -f2 | cut -d\" -f2)
 
 # Clean up from previous releases
-rm -rf *.tgz package
-rm -f SHA256SUMS
-rm -rf lib
+rm -rf *.tgz package SHA256SUMS lib
 
 # Prep new package
-mkdir lib
-mkdir package
+mkdir lib package
 
 # Pull down Python dependencies
-pip3 install -r requirements.txt -t lib --no-binary pyHS100 --prefix ""
+pip3 install -r requirements.txt -t lib --no-binary pytz,requests --prefix ""
 
 # Put package together
-cp -r lib pkg LICENSE package.json *.py package/
+cp -r lib pkg LICENSE manifest.json package.json *.py README.md package/
 find package -type f -name '*.pyc' -delete
 find package -type d -empty -delete
 
 # Generate checksums
 cd package
-sha256sum *.py pkg/*.py LICENSE > SHA256SUMS
-find lib -type f -exec sha256sum {} \; >> SHA256SUMS
+find . -type f \! -name SHA256SUMS -exec sha256sum {} \; >> SHA256SUMS
 cd -
 
 # Make the tarball
diff --git a/requirements.txt b/requirements.txt
index 3ee8e42..db215d4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-pytz==2019.1
+pytz==2019.2
 requests==2.22.0