diff --git a/Gemfile.lock b/Gemfile.lock
index 226c837..bf91090 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -219,8 +219,7 @@ GEM
     regexp_parser (2.7.0)
     reline (0.3.3)
       io-console (~> 0.5)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec-core (3.12.2)
       rspec-support (~> 3.12.0)
     rspec-expectations (3.12.3)
@@ -264,7 +263,6 @@ GEM
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
     spring (4.1.1)
-    strscan (3.1.0)
     thor (1.3.1)
     timeout (0.4.1)
     tzinfo (2.0.6)