diff --git a/package.json b/package.json
index 8969e6d..7a5593b 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,8 @@
     "license": "MIT",
     "dependencies": {
         "fengari": "fengari-lua/fengari",
-        "fengari-interop": "fengari-lua/fengari-interop"
+        "fengari-interop": "fengari-lua/fengari-interop",
+        "sentinel-js": "^0.0.4"
     },
     "devDependencies": {
         "babel-core": "^6.26.0",
diff --git a/src/fengari-web.js b/src/fengari-web.js
index 217c723..aae9a87 100644
--- a/src/fengari-web.js
+++ b/src/fengari-web.js
@@ -5,6 +5,7 @@ const lua      = fengari.lua;
 const lauxlib  = fengari.lauxlib;
 const lualib   = fengari.lualib;
 const interop  = require('fengari-interop');
+const sentinel = require('sentinel-js');
 
 const L = lauxlib.luaL_newstate();
 
@@ -143,22 +144,12 @@ const try_tag = function(tag) {
 	}
 };
 
-/* watch for new script tags added to document */
-(new MutationObserver(function(records, observer) {
-	for (let i=0; i<records.length; i++) {
-		let record = records[i];
-		for (let j=0; j<record.addedNodes.length; j++) {
-			try_tag(record.addedNodes[j]);
-		}
-	}
-})).observe(document, {
-	childList: true,
-	subtree: true
-});
-
 /* the query selector here is slightly liberal,
    more checks occur in try_tag */
 const selector = 'script[type^="application/lua"] script[type^="text/lua"]';
 
+/* watch for new script tags added to document */
+sentinel.on(selector, try_tag);
+
 /* try to run existing script tags */
 Array.prototype.forEach.call(document.querySelectorAll(selector), try_tag);
diff --git a/yarn.lock b/yarn.lock
index f6bc91f..6ce252e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2338,6 +2338,10 @@ safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0,
   version "5.4.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
 
+sentinel-js@^0.0.4:
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/sentinel-js/-/sentinel-js-0.0.4.tgz#44a699b968bf9ecf258ca7e1891de18d62158a0a"
+
 set-blocking@^2.0.0, set-blocking@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"