diff --git a/Gemfile.lock b/Gemfile.lock
index 31a7bb7512..915c070067 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -647,7 +647,8 @@ GEM
       railties (>= 5.0)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rmagick (5.3.0)
       pkg-config (~> 1.4)
     roo (2.9.0)
@@ -789,6 +790,7 @@ GEM
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
     stackprof (0.2.22)
+    strscan (3.1.0)
     swd (1.3.0)
       activesupport (>= 3)
       attr_required (>= 0.0.5)