diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 7267bbb4..ad9637e1 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -116,8 +116,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.3)
-      strscan
+    rexml (3.3.9)
     rouge (3.30.0)
     rspec (3.11.0)
       rspec-core (~> 3.11.0)
@@ -140,7 +139,6 @@ GEM
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
-    strscan (3.1.0)
     terminal-table (2.0.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     typhoeus (1.4.0)