diff --git a/Gemfile.lock b/Gemfile.lock
index 1a4a3df6f..0d636b6be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -86,10 +86,8 @@ GEM
     netrc (0.11.0)
     nkf (0.2.0)
     public_suffix (4.0.7)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     ruby-macho (2.5.1)
-    strscan (3.1.0)
     typhoeus (1.4.1)
       ethon (>= 0.9.0)
     tzinfo (2.0.6)