diff --git a/README.md b/README.md
index b0f3442..6c6c9b5 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ var remark = require('remark');
 var comments = require('remark-comment-blocks');
 
 var markdown = 'Hello, world!';
-var result = remark.use(comments).process(markdown);
+var result = remark.use(comments).processSync(markdown);
 console.log(result);
 ```
 
diff --git a/package.json b/package.json
index f7afa33..d0ed954 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "test-012": "nyc ava src/__tests__"
   },
   "devDependencies": {
-    "ava": "^0.17.0",
+    "ava": "^0.18.0",
     "babel-cli": "^6.5.1",
     "babel-core": "^6.5.2",
     "babel-plugin-add-module-exports": "^0.2.0",
@@ -30,7 +30,7 @@
     "eslint-plugin-babel": "^3.3.0",
     "eslint-plugin-import": "^2.0.1",
     "nyc": "^10.0.0",
-    "remark": "^6.0.0"
+    "remark": "^7.0.0"
   },
   "dependencies": {
     "trim-right": "^1.0.1"
diff --git a/src/__tests__/index.js b/src/__tests__/index.js
index 2b572f7..b73c2fe 100644
--- a/src/__tests__/index.js
+++ b/src/__tests__/index.js
@@ -18,7 +18,7 @@ const specs = directory(base).reduce((tests, contents) => {
 Object.keys(specs).forEach(name => {
     const spec = specs[name];
     ava(name, t => {
-        const {contents} = remark().use(comments).process(spec.fixture);
+        const {contents} = remark().use(comments).processSync(spec.fixture);
         t.deepEqual(contents, spec.expected);
     });
 });
diff --git a/src/index.js b/src/index.js
index 7d2230f..018d946 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,7 +1,7 @@
 import trimRight from 'trim-right';
 
-export default function (remark, opts) {
-    const {visitors} = remark.Compiler.prototype;
+export default function (opts) {
+    const {visitors} = this.Compiler.prototype;
     const {root} = visitors;
 
     const {start, middle, end} = {