diff --git a/Gemfile.lock b/Gemfile.lock
old mode 100755
new mode 100644
index bdc9eac..826071a
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,7 @@ GEM
     autoprefixer-rails (9.6.1.1)
       execjs
     colorator (1.1.0)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.6)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -22,7 +22,7 @@ GEM
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
     execjs (2.7.0)
-    ffi (1.11.1)
+    ffi (1.13.1)
     forwardable-extended (2.6.0)
     html-proofer (3.12.2)
       addressable (~> 2.3)
@@ -36,14 +36,14 @@ GEM
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.3)
-    jekyll (3.8.6)
+    jekyll (3.9.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
       i18n (~> 0.7)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 2.0)
-      kramdown (~> 1.14)
+      kramdown (>= 1.17, < 3)
       liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
@@ -60,12 +60,12 @@ GEM
     jekyll-watch (2.2.1)
       listen (~> 3.0)
     json (2.2.0)
-    kramdown (1.17.0)
+    kramdown (2.3.0)
+      rexml
     liquid (4.0.3)
-    listen (3.1.5)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-      ruby_dep (~> 1.2)
+    listen (3.2.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
     mini_portile2 (2.4.0)
     nokogiri (1.10.4)
@@ -75,13 +75,14 @@ GEM
       ast (~> 2.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.1)
+    public_suffix (4.0.5)
     rainbow (3.0.0)
     rake (12.3.3)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rouge (3.11.0)
+    rexml (3.2.4)
+    rouge (3.21.0)
     rubocop (0.74.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
@@ -90,7 +91,6 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 1.7)
     ruby-progressbar (1.10.1)
-    ruby_dep (1.5.0)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)