diff --git a/Gemfile.lock b/Gemfile.lock
index bfda03cf..f237653a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -140,8 +140,7 @@ GEM
     celluloid (0.16.0)
       timers (~> 4.0.0)
     chartkick (3.4.0)
-    childprocess (0.9.0)
-      ffi (~> 1.0, >= 1.0.11)
+    childprocess (3.0.0)
     chronic (0.10.2)
     coderay (1.1.2)
     coffee-rails (4.2.2)
@@ -513,7 +512,7 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.9.0)
-    rubyzip (1.3.0)
+    rubyzip (2.3.0)
     rufo (0.12.0)
     rufus-scheduler (3.7.0)
       fugit (~> 1.1, >= 1.1.6)
@@ -534,9 +533,9 @@ GEM
     seed-fu (2.3.9)
       activerecord (>= 3.1)
       activesupport (>= 3.1)
-    selenium-webdriver (3.12.0)
-      childprocess (~> 0.5)
-      rubyzip (~> 1.2)
+    selenium-webdriver (3.142.7)
+      childprocess (>= 0.5, < 4.0)
+      rubyzip (>= 1.2.2)
     shellany (0.0.1)
     shrine (3.3.0)
       content_disposition (~> 1.0)