diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index f435980a..b4d54631 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -246,8 +246,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.3.5)
-      strscan
+    rexml (3.3.8)
     rouge (3.30.0)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
@@ -261,7 +260,6 @@ GEM
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
     simpleidn (0.2.3)
-    strscan (3.1.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     typhoeus (1.4.1)