diff --git a/src/component/SeleniumBrowser.js b/src/component/SeleniumBrowser.js
index cda5db1..f7c25ec 100644
--- a/src/component/SeleniumBrowser.js
+++ b/src/component/SeleniumBrowser.js
@@ -22,7 +22,7 @@ class SeleniumBrowser {
                 driver.quit()
             }
         }, {
-            max: 10, min: 1, evictionRunIntervalMillis: 1000 * 60
+            max: 20, min: 1, evictionRunIntervalMillis: 1000 * 60
         });
 
         this.pool.on('factoryCreateError', function (err) {