diff --git a/Gemfile b/Gemfile
index 953c615..c94cf6d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 source 'https://rubygems.org'
 
-gem 'nanoc', '4.7'
+gem 'nanoc', '4.7.4'
 
 # General filtering
 gem 'coffee-script'
diff --git a/Gemfile.lock b/Gemfile.lock
index 177ccad..0f835be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,14 +3,14 @@ GEM
   specs:
     adsf (1.2.1)
       rack (>= 1.0.0)
-    autoprefixer-rails (6.5.3)
+    autoprefixer-rails (6.7.7.1)
       execjs
-    builder (3.2.2)
+    builder (3.2.3)
     coderay (1.1.1)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.10.0)
+    coffee-script-source (1.12.2)
     colored (1.2)
     concurrent-ruby (1.0.5)
     cri (2.7.1)
@@ -21,9 +21,9 @@ GEM
     csspool-st (3.1.2)
     ddplugin (1.0.1)
     execjs (2.7.0)
-    ffi (1.9.14)
+    ffi (1.9.18)
     formatador (0.2.5)
-    guard (2.14.0)
+    guard (2.14.1)
       formatador (>= 0.2.4)
       listen (>= 2.7, < 4.0)
       lumberjack (~> 1.0)
@@ -33,7 +33,7 @@ GEM
       shellany (~> 0.0)
       thor (>= 0.18.1)
     guard-compat (1.2.1)
-    guard-nanoc (2.1.1)
+    guard-nanoc (2.1.2)
       guard (~> 2.8)
       guard-compat (~> 1.0)
       nanoc (>= 4.3.8, < 5.0)
@@ -46,27 +46,27 @@ GEM
       multi_js (>= 0.1.0)
     htmlentities (4.3.4)
     icalendar (2.4.1)
-    json (2.0.2)
-    kramdown (1.13.0)
-    libv8 (3.16.14.17)
+    json (2.0.3)
+    kramdown (1.13.2)
+    libv8 (3.16.14.19)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    lumberjack (1.0.10)
+    lumberjack (1.0.11)
     method_source (0.8.2)
     mini_portile2 (2.1.0)
     multi_css (0.1.0)
       css_press
     multi_js (0.1.0)
       uglifier (~> 2)
-    nanoc (4.7.0)
+    nanoc (4.7.4)
       cri (~> 2.3)
       ddplugin (~> 1.0)
       hamster (~> 3.0)
       ref (~> 2.0)
     nenv (0.3.0)
-    nokogiri (1.6.8.1)
+    nokogiri (1.7.1)
       mini_portile2 (~> 2.1.0)
     notiffany (0.1.1)
       nenv (~> 0.1)
@@ -77,24 +77,24 @@ GEM
       slop (~> 3.4)
     rack (2.0.1)
     rb-fsevent (0.9.8)
-    rb-inotify (0.9.7)
+    rb-inotify (0.9.8)
       ffi (>= 0.5.0)
     ref (2.0.0)
     ruby_dep (1.5.0)
-    sass (3.4.22)
+    sass (3.4.23)
     shellany (0.0.1)
     slop (3.6.0)
     terminal-notifier-guard (1.7.0)
     therubyracer (0.12.3)
-      libv8 (~> 3.16.14.0)
+      libv8 (~> 3.16.14.15)
       ref
-    thor (0.19.1)
+    thor (0.19.4)
     uglifier (2.7.2)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
-    w3c_validators (1.2)
-      json
-      nokogiri
+    w3c_validators (1.3.2)
+      json (>= 1.8)
+      nokogiri (~> 1.6)
     words_counted (1.0.2)
 
 PLATFORMS
@@ -110,7 +110,7 @@ DEPENDENCIES
   html_press
   icalendar
   kramdown
-  nanoc (= 4.7)
+  nanoc (= 4.7.4)
   sass
   terminal-notifier-guard
   therubyracer
@@ -118,4 +118,4 @@ DEPENDENCIES
   words_counted
 
 BUNDLED WITH
-   1.14.5
+   1.14.6