diff --git a/Gemfile.lock b/Gemfile.lock
index 96e90b77c..9faf9179c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,7 +88,7 @@ GEM
     capybara-screenshot (1.0.18)
       capybara (>= 1.0, < 3)
       launchy
-    childprocess (0.8.0)
+    childprocess (0.9.0)
       ffi (~> 1.0, >= 1.0.11)
     chromedriver-helper (1.2.0)
       archive-zip (~> 0.10)
@@ -136,7 +136,7 @@ GEM
       faraday_middleware (>= 0.9)
       loofah (>= 2.0)
       sax-machine (>= 1.0)
-    ffi (1.9.21)
+    ffi (1.9.23)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
     http_accept_language (2.1.1)
@@ -316,7 +316,7 @@ GEM
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
     sax-machine (1.3.2)
-    selenium-webdriver (3.9.0)
+    selenium-webdriver (3.12.0)
       childprocess (~> 0.5)
       rubyzip (~> 1.2)
     shoulda-matchers (3.1.2)