diff --git a/Gemfile.lock b/Gemfile.lock
index 3e3faf947..52a0c0ba4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -442,7 +442,7 @@ GEM
       railties (>= 5.0)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.2.5)
+    rexml (3.3.9)
     rspec (3.11.0)
       rspec-core (~> 3.11.0)
       rspec-expectations (~> 3.11.0)