diff --git a/README.md b/README.md
index 8dc9cf8..27cffb3 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ end
 Habitat.raise_if_missing_settings!
 ```
 
-Then install Chromedriver and view the guides: https://luckyframework.org/guides/browser-tests/
+Then view the guides: https://luckyframework.org/guides/browser-tests/
 
 You should be ready to go!
 
@@ -61,4 +61,4 @@ View guide at: https://luckyframework.org/guides/browser-tests/
 
 ## Contributors
 
-* [paulcsmith](https://github.com/paulcsmith) Paul Smith - creator, maintainer
+- [paulcsmith](https://github.com/paulcsmith) Paul Smith - creator, maintainer
diff --git a/src/lucky_flow/chromedriver.cr b/src/lucky_flow/chromedriver.cr
index a32d2ae..8e14fe6 100644
--- a/src/lucky_flow/chromedriver.cr
+++ b/src/lucky_flow/chromedriver.cr
@@ -6,7 +6,6 @@ class LuckyFlow::Chromedriver
   getter log_io = IO::Memory.new
 
   private def initialize
-    ensure_chromedriver_is_installed
     @process = start_chromedriver
   end
 
@@ -14,21 +13,9 @@ class LuckyFlow::Chromedriver
     new
   end
 
-  private def ensure_chromedriver_is_installed
-    if !Process.find_executable("chromedriver")
-      raise <<-ERROR
-      Chromedriver must be available from the command line to use LuckyFlow.
-
-        ▸ On macOS: brew install chromedriver
-        ▸ On Linux: https://makandracards.com/makandra/29465-install-chromedriver-on-linux
-
-      ERROR
-    end
-  end
-
   private def start_chromedriver : Process
     Process.new(
-      "chromedriver",
+      "#{__DIR__}/../../vendor/chromedriver-2.40-#{os}",
       ["--port=4444", "--url-base=/wd/hub"],
       output: log_io,
       error: STDERR,
@@ -36,6 +23,17 @@ class LuckyFlow::Chromedriver
     )
   end
 
+  private def os
+    os_name = IO::Memory.new
+    Process.run("uname -a", shell: true, output: os_name, error: STDERR)
+
+    if os_name.to_s.includes?("Darwin")
+      "mac64"
+    else
+      "linux64"
+    end
+  end
+
   def stop
     process.kill unless process.terminated?
   end
diff --git a/vendor/chromedriver-2.40-linux64 b/vendor/chromedriver-2.40-linux64
new file mode 100755
index 0000000..cdfd6dd
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diff --git a/vendor/chromedriver-2.40-mac64 b/vendor/chromedriver-2.40-mac64
new file mode 100755
index 0000000..773f1e1
Binary files /dev/null and b/vendor/chromedriver-2.40-mac64 differ