diff --git a/README.md b/README.md
index a2a97f3..c7e8d73 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,8 @@ Templates are parsed by the browser's HTML parser and cached, achieving minimal
 
 ## Syntax: Like JSX but more lit
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/developit/htm.svg?token=efe544930c3507061f013ee68a97ea3c6d091205082de25f85369b49a210af59&ts=1532982792131)](https://greenkeeper.io/)
+
 The syntax is inspired by [lit-html], but includes features familiar to anyone who works with JSX:
 
 - Rest spread: `<div ...${props}>`
diff --git a/greenkeeper.json b/greenkeeper.json
new file mode 100644
index 0000000..6feb8ca
--- /dev/null
+++ b/greenkeeper.json
@@ -0,0 +1,10 @@
+{
+  "groups": {
+    "default": {
+      "packages": [
+        "package.json",
+        "src/integrations/preact/package.json"
+      ]
+    }
+  }
+}