diff --git a/sub-project/Gemfile.lock b/sub-project/Gemfile.lock
index 459cea7d..3907369f 100644
--- a/sub-project/Gemfile.lock
+++ b/sub-project/Gemfile.lock
@@ -99,7 +99,7 @@ GEM
     rdoc (6.2.1)
     redis (4.2.2)
     regexp_parser (1.8.2)
-    rexml (3.2.4)
+    rexml (3.2.5)
     rubocop (1.3.0)
       parallel (~> 1.10)
       parser (>= 2.7.1.5)