diff --git a/CHANGELOG.md b/CHANGELOG.md
index 132e7f8b..90449772 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ All notable changes to this project will be documented in this file.
 - Webhooks can use different req. bodies and headers for "up" and "down" events. (#249)
 - Show check's code instead of full URL on 992px - 1200px wide screens. (#253)
 - Add WhatsApp integration (uses Twilio same as the SMS integration)
+- Webhooks support the $TAGS placeholder
 
 ### Bug Fixes
 - Fix badges for tags containing special characters (#240, #237)
diff --git a/hc/api/tests/test_notify.py b/hc/api/tests/test_notify.py
index 0ce48d8d..caaf5230 100644
--- a/hc/api/tests/test_notify.py
+++ b/hc/api/tests/test_notify.py
@@ -33,7 +33,7 @@ class NotifyTestCase(BaseTestCase):
         self.channel.notify(self.check)
         mock_get.assert_called_with(
             "get",
-            u"http://example",
+            "http://example",
             headers={"User-Agent": "healthchecks.io"},
             timeout=5,
         )
@@ -72,6 +72,19 @@ class NotifyTestCase(BaseTestCase):
         n = Notification.objects.get()
         self.assertEqual(n.error, "Received status code 500")
 
+    @patch("hc.api.transports.requests.request")
+    def test_webhooks_support_tags(self, mock_get):
+        template = "http://host/$TAGS"
+        self._setup_data("webhook", template)
+        self.check.tags = "foo bar"
+        self.check.save()
+
+        self.channel.notify(self.check)
+
+        args, kwargs = mock_get.call_args
+        self.assertEqual(args[0], "get")
+        self.assertEqual(args[1], "http://host/foo%20bar")
+
     @patch("hc.api.transports.requests.request")
     def test_webhooks_support_variables(self, mock_get):
         template = "http://host/$CODE/$STATUS/$TAG1/$TAG2/?name=$NAME"
@@ -82,7 +95,7 @@ class NotifyTestCase(BaseTestCase):
 
         self.channel.notify(self.check)
 
-        url = u"http://host/%s/down/foo/bar/?name=Hello%%20World" % self.check.code
+        url = "http://host/%s/down/foo/bar/?name=Hello%%20World" % self.check.code
 
         args, kwargs = mock_get.call_args
         self.assertEqual(args[0], "get")
@@ -118,7 +131,7 @@ class NotifyTestCase(BaseTestCase):
 
         self.channel.notify(self.check)
 
-        url = u"http://host/%24TAG1"
+        url = "http://host/%24TAG1"
         mock_get.assert_called_with(
             "get", url, headers={"User-Agent": "healthchecks.io"}, timeout=5
         )
@@ -135,7 +148,7 @@ class NotifyTestCase(BaseTestCase):
 
     @patch("hc.api.transports.requests.request")
     def test_webhooks_handle_unicode_post_body(self, mock_request):
-        template = u"http://example.com\n\n(╯°□°）╯︵ ┻━┻"
+        template = "http://example.com\n\n(╯°□°）╯︵ ┻━┻"
         self._setup_data("webhook", template)
         self.check.save()
 
@@ -527,7 +540,7 @@ class NotifyTestCase(BaseTestCase):
         args, kwargs = mock_post.call_args
         payload = kwargs["data"]
         self.assertEqual(payload["To"], "+1234567890")
-        self.assertFalse(u"\xa0" in payload["Body"])
+        self.assertFalse("\xa0" in payload["Body"])
 
         # sent SMS counter should go up
         self.profile.refresh_from_db()
diff --git a/hc/api/transports.py b/hc/api/transports.py
index 07f92eac..9475a89f 100644
--- a/hc/api/transports.py
+++ b/hc/api/transports.py
@@ -13,7 +13,7 @@ def tmpl(template_name, **ctx):
     template_path = "integrations/%s" % template_name
     # \xa0 is non-breaking space. It causes SMS messages to use UCS2 encoding
     # and cost twice the money.
-    return render_to_string(template_path, ctx).strip().replace(u"\xa0", " ")
+    return render_to_string(template_path, ctx).strip().replace("\xa0", " ")
 
 
 class Transport(object):
@@ -161,6 +161,9 @@ class Webhook(HttpTransport):
         if "$NAME" in result:
             result = result.replace("$NAME", safe(check.name))
 
+        if "$TAGS" in result:
+            result = result.replace("$TAGS", safe(check.tags))
+
         if "$TAG" in result:
             for i, tag in enumerate(check.tags_list()):
                 placeholder = "$TAG%d" % (i + 1)
diff --git a/templates/integrations/add_webhook.html b/templates/integrations/add_webhook.html
index e739fc16..d28a6e41 100644
--- a/templates/integrations/add_webhook.html
+++ b/templates/integrations/add_webhook.html
@@ -181,6 +181,10 @@
                         <th><code>$STATUS</code></th>
                         <td>Check's current status ("up" or "down")</td>
                     </tr>
+                    <tr>
+                        <th><code>$TAGS</code></th>
+                        <td>Check's tags, separated by spaces</td>
+                    </tr>
                     <tr>
                         <th><code>$TAG1, $TAG2, …</code></th>
                         <td>Value of the first tag, the second tag, …</td>