diff --git a/squib.gemspec b/squib.gemspec
index 7222673..43514f9 100644
--- a/squib.gemspec
+++ b/squib.gemspec
@@ -29,17 +29,17 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(/^(spec|samples|docs|benchmarks)\//)
   spec.require_paths = ['lib']
 
-  spec.add_runtime_dependency 'cairo',                 '1.15.13'
+  spec.add_runtime_dependency 'cairo',                 '1.16.2'
   spec.add_runtime_dependency 'classy_hash',           '0.2.1'
-  spec.add_runtime_dependency 'gio2',                  '3.2.7'
-  spec.add_runtime_dependency 'gobject-introspection', '3.2.7'
+  spec.add_runtime_dependency 'gio2',                  '3.3.0'
+  spec.add_runtime_dependency 'gobject-introspection', '3.3.0'
   spec.add_runtime_dependency 'highline',              '1.7.10'
   spec.add_runtime_dependency 'mercenary',             '0.3.6'
-  spec.add_runtime_dependency 'nokogiri',              '1.8.4'
-  spec.add_runtime_dependency 'pango',                 '3.2.7'
+  spec.add_runtime_dependency 'nokogiri',              '1.8.5'
+  spec.add_runtime_dependency 'pango',                 '3.3.0'
   spec.add_runtime_dependency 'roo',                   '2.7.1'
-  spec.add_runtime_dependency 'rsvg2',                 '3.2.7'
-  spec.add_runtime_dependency 'ruby-progressbar',      '1.9.0'
+  spec.add_runtime_dependency 'rsvg2',                 '3.3.0'
+  spec.add_runtime_dependency 'ruby-progressbar',      '1.10.0'
 
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'coveralls', '>= 0.8.21'