diff --git a/Gemfile.lock b/Gemfile.lock
index 5373b69..08fc2a3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -122,8 +122,7 @@ GEM
       ffi (~> 1.0)
     rbtree (0.4.6)
     redcarpet (3.6.0)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -144,7 +143,6 @@ GEM
       rbtree
       set (~> 1.0)
     stringio (3.1.1)
-    strscan (3.1.0)
     thor (1.0.1)
     tty-color (0.6.0)
     tty-command (0.10.1)