diff --git a/Gemfile b/Gemfile
index ee3c8a5..4fb03c8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 source 'https://rubygems.org'
 
-gem 'nanoc', '~>4.3.1'
+gem 'nanoc', '~>4.3.3'
 gem 'kramdown'
 gem 'coffee-script'
 # Needed for relativize_urls
diff --git a/Gemfile.lock b/Gemfile.lock
index 4dabb4d..45c0ef0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     adsf (1.2.1)
       rack (>= 1.0.0)
-    autoprefixer-rails (6.4.0.3)
+    autoprefixer-rails (6.5.0.1)
       execjs
     builder (3.2.2)
     coderay (1.1.1)
@@ -35,7 +35,7 @@ GEM
     hamster (3.0.0)
       concurrent-ruby (~> 1.0)
     highline (1.7.8)
-    icalendar (2.4.0)
+    icalendar (2.4.1)
     json (2.0.2)
     kramdown (1.12.0)
     listen (3.1.5)
@@ -45,7 +45,7 @@ GEM
     lumberjack (1.0.10)
     method_source (0.8.2)
     mini_portile2 (2.1.0)
-    nanoc (4.3.2)
+    nanoc (4.3.4)
       cri (~> 2.3)
       hamster (~> 3.0)
       ref (~> 2.0)
@@ -87,10 +87,10 @@ DEPENDENCIES
   highline
   icalendar
   kramdown
-  nanoc (~> 4.3.1)
+  nanoc (~> 4.3.3)
   nokogiri
   sass
   w3c_validators
 
 BUNDLED WITH
-   1.12.5
+   1.13.0