diff --git a/Gemfile.lock b/Gemfile.lock
index 3aad6fda2..a28e3f817 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -302,7 +302,8 @@ GEM
       netrc (~> 0.8)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     roo (2.9.0)
       nokogiri (~> 1)
       rubyzip (>= 1.3.0, < 3.0.0)
@@ -349,6 +350,7 @@ GEM
     sshkit (1.21.2)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
+    strscan (3.1.0)
     systemu (2.6.5)
     teaspoon (1.1.5)
       railties (>= 3.2.5, < 6)