diff --git a/Gemfile.lock b/Gemfile.lock
index 097533f..efcc934 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -98,8 +98,7 @@ GEM
     rainbow (3.1.1)
     rake (13.1.0)
     regexp_parser (2.9.0)
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
+    rexml (3.3.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -148,7 +147,6 @@ GEM
     ruby2_keywords (0.0.5)
     sqlite3 (1.7.0)
       mini_portile2 (~> 2.8.0)
-    strscan (3.1.0)
     thor (1.3.0)
     timeout (0.4.1)
     tzinfo (2.0.6)