diff --git a/Gemfile.lock b/Gemfile.lock
index 6b2cbb4..cb8b677 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -247,7 +247,8 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     regexp_parser (1.8.2)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rouge (3.26.0)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)
@@ -289,6 +290,7 @@ GEM
       rubyzip (>= 1.2.2)
     simpleidn (0.2.1)
       unf (~> 0.1.4)
+    strscan (3.1.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     typhoeus (1.4.0)