diff --git a/Gemfile.lock b/Gemfile.lock
index 595c1e6a..fd57480c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,17 +1,17 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    albacore (2.0.4)
+    albacore (3.0.1)
       map (~> 6.5)
       nokogiri (~> 1.5)
-      rake (> 10)
+      rake (~> 10)
       semver2 (~> 3.4)
     map (6.6.0)
-    mini_portile2 (2.0.0)
-    nokogiri (1.6.7.2-x64-mingw32)
-      mini_portile2 (~> 2.0.0.rc2)
-    os (0.9.6)
-    rake (11.1.1)
+    mini_portile2 (2.3.0)
+    nokogiri (1.8.2-x64-mingw32)
+      mini_portile2 (~> 2.3.0)
+    os (1.0.0)
+    rake (10.5.0)
     semver2 (3.4.2)
 
 PLATFORMS
diff --git a/Rakefile.rb b/Rakefile.rb
index 4fd8cf73..ce99158b 100644
--- a/Rakefile.rb
+++ b/Rakefile.rb
@@ -15,7 +15,7 @@
 TOOLS = File.expand_path("tools")
 NUGET = File.expand_path("#{TOOLS}/nuget")
 NUGET_EXE = File.expand_path("#{TOOLS}/nuget/nuget.exe")
-@version = "2.19.0"
+@version = "2.20.0"
 PROJECTS = Dir.glob('src/*').select{|dir| File.directory? dir }
 
 desc 'Retrieve things'