diff --git a/Gemfile.lock b/Gemfile.lock
index 57b4bfa..00fd0a4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,8 +61,8 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (~> 1.2)
       xpath (~> 3.2)
-    childprocess (0.9.0)
-      ffi (~> 1.0, >= 1.0.11)
+    childprocess (2.0.0)
+      rake (< 13.0)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
@@ -78,7 +78,7 @@ GEM
       railties (>= 3.2, < 6.1)
     erubi (1.8.0)
     execjs (2.7.0)
-    ffi (1.10.0)
+    ffi (1.11.1)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     hashids (1.0.5)
@@ -153,7 +153,7 @@ GEM
       ffi (~> 1.0)
     regexp_parser (1.3.0)
     ruby_dep (1.5.0)
-    rubyzip (1.2.2)
+    rubyzip (1.3.0)
     sass (3.7.3)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
@@ -165,9 +165,9 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    selenium-webdriver (3.141.0)
-      childprocess (~> 0.5)
-      rubyzip (~> 1.2, >= 1.2.2)
+    selenium-webdriver (3.142.5)
+      childprocess (>= 0.5, < 3.0)
+      rubyzip (>= 1.2.2)
     spring (2.0.2)
       activesupport (>= 4.2)
     spring-watcher-listen (2.0.1)