diff --git a/Gemfile.lock b/Gemfile.lock
index 18e2652..b3a0960 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,8 +34,7 @@ GEM
     rainbow (3.1.1)
     rake (13.2.1)
     regexp_parser (2.9.2)
-    rexml (3.3.2)
-      strscan
+    rexml (3.3.9)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -77,8 +76,6 @@ GEM
       rack-protection (= 4.0.0)
       rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    strscan (3.1.0)
-    strscan (3.1.0-java)
     tilt (2.4.0)
     unicode-display_width (2.5.0)
     webrick (1.8.1)