diff --git a/lib/sw-precache.js b/lib/sw-precache.js
index 297ab59..28eb389 100644
--- a/lib/sw-precache.js
+++ b/lib/sw-precache.js
@@ -181,7 +181,7 @@ function generate(params, callback) {
     var runtimeCaching;
     var swToolboxCode;
     if (params.runtimeCaching) {
-      var pathToSWToolbox = require.resolve('sw-toolbox/sw-toolbox.js');
+      var pathToSWToolbox = require.resolve('sw-toolbox/lib/sw-toolbox.js');
       swToolboxCode = fs.readFileSync(pathToSWToolbox, 'utf8')
         .replace('//# sourceMappingURL=sw-toolbox.map.json', '');