diff --git a/Gemfile.lock b/Gemfile.lock
index a4e9c31..bb83eb4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,8 +11,7 @@ GEM
     jasmine-core (3.99.0)
     rack (3.0.9.1)
     rake (12.3.3)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -32,7 +31,6 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
-    strscan (3.1.0)
     websocket (1.2.9)
 
 PLATFORMS