diff --git a/Gemfile.lock b/Gemfile.lock
index 74dc011..3fccecc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -206,8 +206,7 @@ GEM
     rbtree3 (0.7.0)
     refills (0.2.0)
     regexp_parser (2.6.1)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec-core (3.12.0)
       rspec-support (~> 3.12.0)
     rspec-expectations (3.12.0)
@@ -243,7 +242,6 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
-    strscan (3.1.0)
     thor (1.3.1)
     tilt (2.0.11)
     timeout (0.4.1)