diff --git a/Gemfile b/Gemfile
index 2f2171c..14c6291 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source "https://rubygems.org"
 ruby RUBY_VERSION
 
-gem "jekyll", "3.6.2"
+gem "jekyll", "3.6.3"
 
 # to use GitHub Pages
 # gem "github-pages", group: :jekyll_plugins
diff --git a/Gemfile.lock b/Gemfile.lock
index 3c52e83..7ec208f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,10 +5,10 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
     concurrent-ruby (1.1.5)
-    ffi (1.11.2)
-    ffi (1.11.2-x64-mingw32)
+    ffi (1.13.1)
+    ffi (1.13.1-x64-mingw32)
     forwardable-extended (2.6.0)
-    jekyll (3.6.2)
+    jekyll (3.6.3)
       addressable (~> 2.4)
       colorator (~> 1.0)
       jekyll-sass-converter (~> 1.0)
@@ -36,15 +36,15 @@ GEM
       trollop (= 2.9.9)
     kramdown (1.17.0)
     liquid (4.0.3)
-    listen (3.2.0)
+    listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.1)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    public_suffix (4.0.5)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
     rouge (2.2.1)
     safe_yaml (1.0.5)
@@ -64,7 +64,7 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
-  jekyll (= 3.6.2)
+  jekyll (= 3.6.3)
   jekyll-feed
   jekyll-redirect-from (~> 0.11.0)
   jekyll-seo-tag