diff --git a/Gemfile.lock b/Gemfile.lock
index ea758e178..abd58a910 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -331,8 +331,7 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -413,7 +412,6 @@ GEM
     stateoscope (0.1.3)
       activesupport
       ruby-graphviz
-    strscan (3.1.0)
     thor (1.3.1)
     tilt (2.3.0)
     timecop (0.9.10)