diff --git a/src/ElasticApiParser.js b/src/ElasticApiParser.js
index 6ea45d6..bacb919 100644
--- a/src/ElasticApiParser.js
+++ b/src/ElasticApiParser.js
@@ -123,7 +123,8 @@ export default class ElasticApiParser {
   }
 
   static findApiVersionFile(version: string): string {
-    const apiFolder = './node_modules/elasticsearch/src/lib/apis/';
+    const esModulePath = path.dirname(require.resolve('elasticsearch'));
+    const apiFolder = `${esModulePath}/lib/apis/`;
     const apiListFile = path.resolve(apiFolder, 'index.js');
     const apiListCode = ElasticApiParser.loadApiListFile(apiListFile);