diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index dba5186..c7d0cda 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -3,26 +3,15 @@ GEM
   specs:
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
-    bibtex-ruby (4.4.6)
-      latex-decode (~> 0.0)
-    citeproc (1.0.9)
-      namae (~> 1.0)
-    citeproc-ruby (1.1.10)
-      citeproc (~> 1.0, >= 1.0.9)
-      csl (~> 1.5)
     colorator (1.1.0)
     concurrent-ruby (1.0.5)
-    csl (1.5.0)
-      namae (~> 1.0)
-    csl-styles (1.0.1.8)
-      csl (~> 1.0)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.5)
     eventmachine (1.2.5-x64-mingw32)
-    ffi (1.9.23)
-    ffi (1.9.23-x64-mingw32)
+    ffi (1.12.1)
+    ffi (1.12.1-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
@@ -42,31 +31,15 @@ GEM
       safe_yaml (~> 1.0)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
-    jekyll-scholar (5.13.0)
-      bibtex-ruby (~> 4.0, >= 4.0.13)
-      citeproc-ruby (~> 1.0)
-      csl-styles (~> 1.0)
-      jekyll (~> 3.0)
-    jekyll-toc (0.5.2)
-      nokogiri (~> 1.6)
     jekyll-watch (2.0.0)
       listen (~> 3.0)
-    jekyll-youtube (1.0.0)
-      jekyll
     kramdown (1.16.2)
-    latex-decode (0.3.1)
     liquid (4.0.0)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     mercenary (0.3.6)
-    mini_portile2 (2.3.0)
-    namae (1.0.1)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
-    nokogiri (1.8.2-x64-mingw32)
-      mini_portile2 (~> 2.3.0)
     pathutil (0.16.1)
       forwardable-extended (~> 2.6)
     public_suffix (3.0.2)
@@ -88,9 +61,6 @@ PLATFORMS
 
 DEPENDENCIES
   jekyll
-  jekyll-scholar
-  jekyll-toc
-  jekyll-youtube
 
 BUNDLED WITH
    1.16.1