diff --git a/murakami/runner.py b/murakami/runner.py
index bcef865..35c23f3 100644
--- a/murakami/runner.py
+++ b/murakami/runner.py
@@ -5,8 +5,6 @@
 from datetime import datetime
 import logging
 
-from webthing import Thing
-
 from murakami.errors import RunnerError
 import murakami.utils as utils
 
diff --git a/murakami/server.py b/murakami/server.py
index 3f91eff..b628f22 100644
--- a/murakami/server.py
+++ b/murakami/server.py
@@ -12,10 +12,8 @@
 from apscheduler.triggers.base import BaseTrigger
 from tornado.ioloop import IOLoop
 from tornado import gen
-from webthing import WebThingServer, SingleThing
 
 import murakami.defaults as defaults
-from murakami.thing import MurakamiThing
 import murakami.utils as utils
 
 _logger = logging.getLogger(__name__)
@@ -140,6 +138,9 @@ def _load_runners(self):
 
         # Start webthings server if enabled
         if self._webthings:
+            from webthing import WebThingServer, SingleThing
+            from murakami.thing import MurakamiThing
+
             self._server = WebThingServer(
                 SingleThing(MurakamiThing(self._runners.values())),
                 port=self._port,
diff --git a/pyproject.toml b/pyproject.toml
index fa667bb..2a9a252 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,9 +12,12 @@ murakami = 'murakami.__main__:main'
 murakami-convert = 'scripts.convert:main'
 murakami-upload = 'scripts.upload:main'
 
+[tool.poetry.extras]
+webthings = ["webthing"]
+
 [tool.poetry.dependencies]
 python = "^3.6"
-webthing = "^0.12.0"
+webthing = {version = "^0.12.0", optional = true}
 configargparse = "^0.14.0"
 tomlkit = "^0.5.5"
 apscheduler = "^3.6"