diff --git a/Gemfile.lock b/Gemfile.lock
index 54d2c39..a52654c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,23 +1,16 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.3)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
     concurrent-ruby (1.1.5)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
-    execjs (2.7.0)
-    extras (0.3.0)
-      forwardable-extended (~> 2.5)
-    fastimage (2.1.5)
+    ffi (1.11.1)
     ffi (1.11.1-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
@@ -36,21 +29,8 @@ GEM
       pathutil (~> 0.9)
       rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
-    jekyll-assets (3.0.12)
-      activesupport (~> 5.0)
-      execjs (~> 2.7)
-      extras (~> 0.2)
-      fastimage (~> 2.0, >= 1.8)
-      jekyll (>= 3.5, < 4.0)
-      jekyll-sanity (~> 1.2)
-      liquid-tag-parser (~> 1.0)
-      nokogiri (~> 1.8)
-      pathutil (~> 0.16)
-      sprockets (>= 3.3, < 4.1.beta)
     jekyll-feed (0.12.1)
       jekyll (>= 3.7, < 5.0)
-    jekyll-sanity (1.2.0)
-      jekyll (~> 3.1)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
     jekyll-seo-tag (2.6.1)
@@ -59,26 +39,18 @@ GEM
       listen (~> 3.0)
     kramdown (1.17.0)
     liquid (4.0.3)
-    liquid-tag-parser (1.9.0)
-      extras (~> 0.3)
-      liquid (>= 3.0, < 5.0)
     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 (2.4.0)
     minima (2.5.1)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
-    minitest (5.11.3)
-    nokogiri (1.10.4-x64-mingw32)
-      mini_portile2 (~> 2.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.1.1)
-    rack (2.0.7)
+    public_suffix (5.0.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
@@ -90,9 +62,6 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    sprockets (3.7.2)
-      concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
     thread_safe (0.3.6)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
@@ -101,12 +70,11 @@ GEM
     wdm (0.1.1)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES
   jekyll (~> 3.8.6)
-  jekyll-assets
-  jekyll-feed (~> 0.6)
   minima (~> 2.0)
   tzinfo (~> 1.2)
   tzinfo-data