diff --git a/Gemfile.lock b/Gemfile.lock
index e018161..932aeaf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,9 @@ GEM
     minitest (5.14.4)
     public_suffix (4.0.6)
     rake (12.3.3)
-    rexml (3.2.5)
+    rexml (3.3.3)
+      strscan
+    strscan (3.1.0)
     vcr (6.0.0)
     webmock (3.12.2)
       addressable (>= 2.3.6)