diff --git a/README.mdown b/README.mdown
index 06d3043..a7d1969 100644
--- a/README.mdown
+++ b/README.mdown
@@ -1,6 +1,6 @@
 # wkhtmltopdf-heroku
 
-Provides a [wkhtmltopdf](http://wkhtmltopdf.org/) binary for [Heroku](http://www.heroku.com/) Ubuntu 16.04 LTS environment.
+Provides a [wkhtmltopdf](http://wkhtmltopdf.org/) binary for [Heroku](http://www.heroku.com/) Ubuntu 18.04/16.04 LTS environment.
 
 Preconfigures [pdfkit](https://rubygems.org/gems/pdfkit), [wicked_pdf](https://rubygems.org/gems/wicked_pdf), and [wisepdf](http://rubygems.org/gems/wisepdf) to use this binary if they are loaded.
 
@@ -8,8 +8,16 @@ Preconfigures [pdfkit](https://rubygems.org/gems/pdfkit), [wicked_pdf](https://r
 
 In your `Gemfile`:
 
+For Heroku Stack 18 (Ubuntu 18.04)
+
+```ruby
+  gem 'wkhtmltopdf-heroku', '2.12.5.0'
+```
+
+For Heroku Stack 16 (Ubuntu 16.04)
+
 ```ruby
-  gem 'wkhtmltopdf-heroku'
+  gem 'wkhtmltopdf-heroku', '2.12.4'
 ```
 
 ## Usage
diff --git a/VERSION b/VERSION
index e540d23..2052ac8 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.12.5.0-alpha
+2.12.5.0
\ No newline at end of file
diff --git a/bin/wkhtmltopdf-linux-amd64 b/bin/wkhtmltopdf-linux-amd64
old mode 100755
new mode 100644
index 5384946..267663b
Binary files a/bin/wkhtmltopdf-linux-amd64 and b/bin/wkhtmltopdf-linux-amd64 differ
diff --git a/wkhtmltopdf-heroku.gemspec b/wkhtmltopdf-heroku.gemspec
index 7d50b61..3253a99 100644
--- a/wkhtmltopdf-heroku.gemspec
+++ b/wkhtmltopdf-heroku.gemspec
@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
 
   s.authors = ["Brad Phelan"]
   s.date = Time.now.strftime('%Y-%m-%d')
-  s.description = "This gem provides a wkhtmltopdf binary and configures wisepdf, wicked_pdf, and pdfkit for ruby based applications running in Heroku's Cedar-14 stack"
+  s.description = "This gem provides a wkhtmltopdf binary and configures wisepdf, wicked_pdf, and pdfkit for ruby based applications running in Heroku"
   s.email = "bradphelan@xtargets.com"
   s.executables = ["wkhtmltopdf-linux-amd64"]
   s.extra_rdoc_files = [
@@ -26,6 +26,6 @@ Gem::Specification.new do |s|
   s.licenses = ["MIT"]
   s.require_paths = ["lib"]
   s.rubygems_version = "1.8.15"
-  s.summary = "provides wkhtmltopdf binaries for heroku cedar-14 stack"
+  s.summary = "provides wkhtmltopdf binaries for Heroku-18 stack"
 end