diff --git a/.gitignore b/.gitignore
index 5c49d4c..f6d83d4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ coverage/
 tmp/
 npm-debug.log*
 .DS_Store
+.nyc_output/
diff --git a/.npmrc b/.npmrc
new file mode 100644
index 0000000..43c97e7
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1 @@
+package-lock=false
diff --git a/.travis.yml b/.travis.yml
index eb5b6c6..d3e8bac 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,18 @@
-node_js:
-  - stable
-  - 9
-  - 6
-  - 4
-sudo: false
+os: linux
+dist: bionic
 language: node_js
+node_js:
+  - 12
+  - 10
+  - 8
 script: "npm run test:cov"
-after_script: "npm i -g codecov.io && cat ./coverage/lcov.info | codecov"
+
+jobs:
+  include:
+    - node_js: stable
+      after_script: |
+        npm i -g codecov
+        npx nyc report --reporter=text-lcov | codecov --pipe
+    # Node.js 6 is not supported by nyc, so run tests without code coverage
+    - node_js: 6
+      script: npm run test
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..50f9803
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,21 @@
+# css-extract change log
+
+All notable changes to this project will be documented in this file.
+
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## 2.0.0
+* Update dependencies. ([@goto-bus-stop][] in [#16][])
+* Add test for `insertCss(someDynamicValue)`. ([@ahdinosaur][] in [#12][])
+
+[@goto-bus-stop]: https://github.com/goto-bus-stop
+[@ahdinosaur]: https://github.com/ahdinosaur
+[#12]: https://github.com/stackcss/css-extract/pull/12
+[#16]: https://github.com/stackcss/css-extract/pull/16
+
+## 1.3.1
+* Update static-module. ([@s3ththompson][] in [#15][])
+* Update stability badge to stable.
+
+[@s3ththompson]: https://github.com/s3ththompson
+[#15]: https://github.com/stackcss/css-extract/pull/15
diff --git a/README.md b/README.md
index cc5119d..4e3f3ae 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ $ npm install css-extract
 ## License
 [MIT](https://tldrlegal.com/license/mit-license)
 
-[0]: https://img.shields.io/badge/stability-experimental-orange.svg?style=flat-square
+[0]: https://img.shields.io/badge/stability-stable-green.svg?style=flat-square
 [1]: https://nodejs.org/api/documentation.html#documentation_stability_index
 [2]: https://img.shields.io/npm/v/css-extract.svg?style=flat-square
 [3]: https://npmjs.org/package/css-extract
diff --git a/index.js b/index.js
index 289f646..473099b 100644
--- a/index.js
+++ b/index.js
@@ -16,8 +16,8 @@ function cssExtract (bundle, opts) {
   var outFile = opts.out || opts.o || 'bundle.css'
   var sourceMap = d(opts.sourceMap, bundle && bundle._options && bundle._options.debug, false)
 
-  assert.equal(typeof bundle, 'object', 'bundle should be an object')
-  assert.equal(typeof opts, 'object', 'opts should be an object')
+  assert.strictEqual(typeof bundle, 'object', 'bundle should be an object')
+  assert.strictEqual(typeof opts, 'object', 'opts should be an object')
 
   // every time .bundle is called, attach hook
   bundle.on('reset', addHooks)
diff --git a/package.json b/package.json
index 71dd1ac..9eddcde 100644
--- a/package.json
+++ b/package.json
@@ -1,12 +1,12 @@
 {
   "name": "css-extract",
-  "version": "1.3.0",
+  "version": "2.0.0",
   "description": "Extract CSS from a browserify bundle",
   "main": "index.js",
   "scripts": {
     "deps": "dependency-check . && dependency-check . --extra --no-dev",
     "test": "standard && npm run deps && NODE_ENV=test node test",
-    "test:cov": "standard && npm run deps && NODE_ENV=test istanbul cover ./test/index.js"
+    "test:cov": "standard && npm run deps && NODE_ENV=test nyc node test"
   },
   "repository": "stackcss/css-extract",
   "keywords": [
@@ -20,21 +20,21 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "bl": "^1.1.2",
+    "bl": "^4.0.2",
     "defined": "^1.0.0",
     "from2-string": "^1.1.0",
-    "static-module": "^2.2.0",
-    "through2": "^2.0.1"
+    "static-module": "^3.0.0",
+    "through2": "^4.0.2"
   },
   "devDependencies": {
-    "browserify": "^13.0.0",
-    "dependency-check": "^2.5.1",
+    "browserify": "^16.5.2",
+    "dependency-check": "^2.10.1",
     "insert-css": "^2.0.0",
-    "istanbul": "^0.4.2",
-    "sheetify": "^6.0.0",
-    "standard": "^6.0.7",
-    "tape": "^4.5.0",
-    "tmp": "0.0.28"
+    "nyc": "^15.1.0",
+    "sheetify": "^8.0.0",
+    "standard": "^14.3.4",
+    "tape": "^5.0.1",
+    "tmp": "^0.2.1"
   },
   "files": [
     "index.js",
diff --git a/test/index.js b/test/index.js
index 1afa789..2a93fb4 100644
--- a/test/index.js
+++ b/test/index.js
@@ -33,7 +33,7 @@ test('css-extract', function (t) {
 
   t.test('should extract sheetify css to file', function (t) {
     t.plan(3)
-    tmpDir({unsafeCleanup: true}, onDir)
+    tmpDir({ unsafeCleanup: true }, onDir)
 
     function onDir (err, dir, cleanup) {
       t.ifError(err, 'no error')
@@ -108,4 +108,26 @@ test('css-extract', function (t) {
       t.ok(String(data).indexOf(String(source)) !== -1, 'source is still in built bundle')
     }
   })
+
+  t.test('should not extract dynamic insert-css statements, again', function (t) {
+    t.plan(4)
+    const sourcePath = path.join(__dirname, 'source-dynamic-2.js')
+
+    browserify(sourcePath)
+      .plugin(cssExtract, { out: readCss })
+      .bundle(readJs)
+
+    function readCss () {
+      return bl(function (err, data) {
+        t.ifError(err, 'no error')
+        t.equal(String(data), '', 'no css extracted')
+      })
+    }
+
+    function readJs (err, data) {
+      t.ifError(err, 'no error')
+      const source = fs.readFileSync(sourcePath, 'utf8')
+      t.ok(String(data).indexOf(String(source)) !== -1, 'source is still in built bundle')
+    }
+  })
 })
diff --git a/test/source-dynamic-2.js b/test/source-dynamic-2.js
new file mode 100644
index 0000000..fd696d4
--- /dev/null
+++ b/test/source-dynamic-2.js
@@ -0,0 +1,7 @@
+var insertCss = require('insert-css')
+
+insert('.foo {}')
+
+function insert (foo) {
+  insertCss(foo)
+}