diff --git a/Gemfile b/Gemfile
index a10cfaf..d3034b0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,5 +8,6 @@ gem 'middleman-autoprefixer', '~> 2.7'
 gem 'middleman-sprockets', '~> 4.1'
 gem 'rouge', '~> 3.21'
 gem 'redcarpet', '~> 3.5.0'
-gem 'nokogiri', '~> 1.11.0'
+gem 'nokogiri', '~> 1.12.5'
 gem 'sass'
+gem 'ffi', git: 'https://github.com/ffi/ffi.git' # Remove once a version > 1.15.4 is released
diff --git a/Gemfile.lock b/Gemfile.lock
index 5b7dd0a..fd6f102 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,3 +1,9 @@
+GIT
+  remote: https://github.com/ffi/ffi.git
+  revision: 315d66e7b0768856d589e15bf597f4816d5cd524
+  specs:
+    ffi (1.15.4)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -22,7 +28,6 @@ GEM
     execjs (2.7.0)
     fast_blank (1.0.0)
     fastimage (2.2.0)
-    ffi (1.13.1)
     haml (5.1.2)
       temple (>= 0.8.0)
       tilt
@@ -77,10 +82,10 @@ GEM
     middleman-syntax (3.2.0)
       middleman-core (>= 3.2)
       rouge (~> 3.2)
-    mini_portile2 (2.5.0)
+    mini_portile2 (2.6.1)
     minitest (5.14.2)
-    nokogiri (1.11.1)
-      mini_portile2 (~> 2.5.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
     padrino-helpers (0.13.3.4)
       i18n (~> 0.6, >= 0.6.7)
@@ -122,11 +127,12 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  ffi!
   middleman (~> 4.3)
   middleman-autoprefixer (~> 2.7)
   middleman-sprockets (~> 4.1)
   middleman-syntax (~> 3.2)
-  nokogiri (~> 1.11.0)
+  nokogiri (~> 1.12.5)
   redcarpet (~> 3.5.0)
   rouge (~> 3.21)
   sass