diff --git a/mongo/Gemfile.lock b/mongo/Gemfile.lock
index 976bae8..26de5d7 100644
--- a/mongo/Gemfile.lock
+++ b/mongo/Gemfile.lock
@@ -34,8 +34,7 @@ GEM
     rainbow (3.1.1)
     rake (13.0.6)
     regexp_parser (2.8.0)
-    rexml (3.3.3)
-      strscan
+    rexml (3.3.9)
     rubocop (1.50.2)
       json (~> 2.3)
       parallel (~> 1.10)
@@ -63,7 +62,6 @@ GEM
     standard-performance (1.0.1)
       lint_roller (~> 1.0)
       rubocop-performance (~> 1.16.0)
-    strscan (3.1.0)
     unicode-display_width (2.4.2)
 
 PLATFORMS