diff --git a/Gemfile.lock b/Gemfile.lock
index c89f28f..d793087 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,8 +90,7 @@ GEM
       json
       matrix
     regexp_parser (2.9.2)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -130,7 +129,6 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    strscan (3.1.0)
     subprocess (1.5.6)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)