diff --git a/Gemfile.lock b/Gemfile.lock
index 3db43f1..3b0fae2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,18 +1,18 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.10)
+    concurrent-ruby (1.3.5)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
     eventmachine (1.2.7)
-    ffi (1.15.5)
+    ffi (1.17.2-x86_64-linux-gnu)
     forwardable-extended (2.6.0)
     http_parser.rb (0.8.0)
-    i18n (1.10.0)
+    i18n (1.14.7)
       concurrent-ruby (~> 1.0)
     jekyll (4.2.2)
       addressable (~> 2.4)
@@ -40,30 +40,30 @@ GEM
       jekyll (>= 3.8, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.4.0)
-      rexml
+    kramdown (2.5.1)
+      rexml (>= 3.3.9)
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
-    liquid (4.0.3)
+    liquid (4.0.4)
     liquid-md5 (0.0.3)
       liquid (>= 2.5, < 5.0)
-    listen (3.7.1)
+    listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
-    minima (2.5.1)
+    minima (2.5.2)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.7)
+    public_suffix (6.0.2)
     rake (12.3.3)
-    rb-fsevent (0.11.1)
-    rb-inotify (0.10.1)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.2.5)
-    rouge (3.29.0)
+    rexml (3.4.4)
+    rouge (3.30.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)