diff --git a/TestApp/Gemfile.lock b/TestApp/Gemfile.lock
index 5b89ebae6..b21e0531b 100644
--- a/TestApp/Gemfile.lock
+++ b/TestApp/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
     netrc (0.11.0)
     nkf (0.2.0)
     public_suffix (4.0.7)
-    rexml (3.3.9)
+    rexml (3.4.2)
     ruby-macho (2.5.1)
     typhoeus (1.4.1)
       ethon (>= 0.9.0)