diff --git a/Gemfile.lock b/Gemfile.lock
index 705f118..f25709f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -330,8 +330,8 @@ GEM
     retriable (3.1.2)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
+    rexml (3.3.6)
+      strscan
     rspec-core (3.12.2)
       rspec-support (~> 3.12.0)
     rspec-expectations (3.12.3)