diff --git a/Gemfile.lock b/Gemfile.lock
index e3979f9..3b34969 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -229,10 +229,11 @@ GEM
     ruby-vips (2.1.4)
       ffi (~> 1.12)
     rubyzip (2.3.2)
-    selenium-webdriver (4.1.0)
+    selenium-webdriver (4.2.1)
       childprocess (>= 0.5, < 5.0)
       rexml (~> 3.2, >= 3.2.5)
-      rubyzip (>= 1.2.2)
+      rubyzip (>= 1.2.2, < 3.0)
+      websocket (~> 1.0)
     sprockets (4.0.3)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -261,6 +262,7 @@ GEM
       nokogiri (~> 1.6)
       rubyzip (>= 1.3.0)
       selenium-webdriver (~> 4.0)
+    websocket (1.2.9)
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)