diff --git a/Gemfile.lock b/Gemfile.lock
index 5ddef0bcc..6890d3280 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -316,9 +316,9 @@ GEM
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
     sax-machine (1.3.2)
-    selenium-webdriver (3.8.0)
+    selenium-webdriver (3.9.0)
       childprocess (~> 0.5)
-      rubyzip (~> 1.0)
+      rubyzip (~> 1.2)
     shoulda-matchers (3.1.2)
       activesupport (>= 4.0.0)
     sidekiq (5.1.0)