diff --git a/Gemfile.lock b/Gemfile.lock
index 19de199..e229e91 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,17 +10,15 @@ GEM
       appium_lib_core (~> 1.7.0)
       nokogiri (~> 1.8, >= 1.8.1)
       tomlrb (~> 1.1)
-    appium_lib_core (1.7.0)
+    appium_lib_core (1.7.2)
       faye-websocket (~> 0.10.0)
       selenium-webdriver (~> 3.5)
-    childprocess (0.9.0)
-      ffi (~> 1.0, >= 1.0.11)
+    childprocess (3.0.0)
     diff-lcs (1.3)
     eventmachine (1.2.7)
-    faye-websocket (0.10.7)
+    faye-websocket (0.10.9)
       eventmachine (>= 0.12.0)
       websocket-driver (>= 0.5.1)
-    ffi (1.9.25)
     json (1.8.6)
     mini_portile2 (2.3.0)
     nokogiri (1.8.2)
@@ -42,14 +40,14 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.7.0)
     rspec-support (3.7.1)
-    rubyzip (1.2.1)
-    selenium-webdriver (3.12.0)
-      childprocess (~> 0.5)
-      rubyzip (~> 1.2)
+    rubyzip (2.0.0)
+    selenium-webdriver (3.142.6)
+      childprocess (>= 0.5, < 4.0)
+      rubyzip (>= 1.2.2)
     tomlrb (1.2.6)
-    websocket-driver (0.7.0)
+    websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
+    websocket-extensions (0.1.4)
 
 PLATFORMS
   ruby