diff --git a/Gemfile.lock b/Gemfile.lock
index 26566cd..6eed5bc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,9 @@ GEM
       rexml
     minitest (5.16.3)
     rake (13.0.6)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
+    strscan (3.1.0)
 
 PLATFORMS
   ruby