diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index c84dfab..99dff32 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -9,6 +9,7 @@ GEM
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
     eventmachine (1.2.7)
+    ffi (1.15.5)
     ffi (1.15.5-x64-mingw-ucrt)
     forwardable-extended (2.6.0)
     http_parser.rb (0.8.0)
@@ -51,7 +52,8 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rouge (3.30.0)
     rubyzip (2.3.2)
     safe_yaml (1.0.5)
@@ -60,11 +62,13 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
+    strscan (3.1.0)
     wdm (0.1.1)
     webrick (1.7.0)
 
 PLATFORMS
   x64-mingw-ucrt
+  x86_64-linux
 
 DEPENDENCIES
   jekyll (= 3.9.0)