diff --git a/python-book-django-tornado-flask-twisted-201811/chapter12/xuemc/web/plugins/Font-Awesome-3.2.1/Gemfile b/python-book-django-tornado-flask-twisted-201811/chapter12/xuemc/web/plugins/Font-Awesome-3.2.1/Gemfile
index 499bcea..465c1f1 100644
--- a/python-book-django-tornado-flask-twisted-201811/chapter12/xuemc/web/plugins/Font-Awesome-3.2.1/Gemfile
+++ b/python-book-django-tornado-flask-twisted-201811/chapter12/xuemc/web/plugins/Font-Awesome-3.2.1/Gemfile
@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 
-gem 'jekyll', '~> 1.0'
+gem 'jekyll', '~> 3.6'
 gem 'debugger'
diff --git a/python-book-django-tornado-flask-twisted-201811/chapter12/xuemc/web/plugins/Font-Awesome-3.2.1/Gemfile.lock b/python-book-django-tornado-flask-twisted-201811/chapter12/xuemc/web/plugins/Font-Awesome-3.2.1/Gemfile.lock
index a00e13f..931283f 100644
--- a/python-book-django-tornado-flask-twisted-201811/chapter12/xuemc/web/plugins/Font-Awesome-3.2.1/Gemfile.lock
+++ b/python-book-django-tornado-flask-twisted-201811/chapter12/xuemc/web/plugins/Font-Awesome-3.2.1/Gemfile.lock
@@ -1,46 +1,56 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    classifier (1.3.3)
-      fast-stemmer (>= 1.0.0)
-    colorator (0.1)
+    addressable (2.8.4)
+      public_suffix (>= 2.0.2, < 6.0)
+    colorator (1.1.0)
     columnize (0.3.6)
-    commander (4.1.3)
-      highline (~> 1.6.11)
     debugger (1.6.0)
       columnize (>= 0.3.1)
       debugger-linecache (~> 1.2.0)
       debugger-ruby_core_source (~> 1.2.1)
     debugger-linecache (1.2.0)
     debugger-ruby_core_source (1.2.2)
-    directory_watcher (1.4.1)
-    fast-stemmer (1.0.2)
-    highline (1.6.19)
-    jekyll (1.0.0)
-      classifier (~> 1.3)
-      colorator (~> 0.1)
-      commander (~> 4.1.3)
-      directory_watcher (~> 1.4.1)
-      kramdown (~> 0.14)
-      liquid (~> 2.3)
-      maruku (~> 0.5)
-      pygments.rb (~> 0.4.2)
-      safe_yaml (~> 0.7.0)
-    kramdown (0.14.2)
-    liquid (2.5.0)
-    maruku (0.6.1)
-      syntax (>= 1.0.0)
-    posix-spawn (0.3.6)
-    pygments.rb (0.4.2)
-      posix-spawn (~> 0.3.6)
-      yajl-ruby (~> 1.1.0)
-    safe_yaml (0.7.1)
-    syntax (1.0.0)
-    yajl-ruby (1.1.0)
+    ffi (1.15.5)
+    forwardable-extended (2.6.0)
+    jekyll (3.6.3)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      jekyll-sass-converter (~> 1.0)
+      jekyll-watch (~> 1.1)
+      kramdown (~> 1.14)
+      liquid (~> 4.0)
+      mercenary (~> 0.3.3)
+      pathutil (~> 0.9)
+      rouge (>= 1.7, < 3)
+      safe_yaml (~> 1.0)
+    jekyll-sass-converter (1.5.2)
+      sass (~> 3.4)
+    jekyll-watch (1.5.1)
+      listen (~> 3.0)
+    kramdown (1.17.0)
+    liquid (4.0.4)
+    listen (3.8.0)
+      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 (5.0.1)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    rouge (2.2.1)
+    safe_yaml (1.0.5)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   debugger
-  jekyll (= 1.0)
+  jekyll (~> 3.6)