diff --git a/CHANGELOG.md b/CHANGELOG.md
index 345e833..870f204 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 ## Version 4.0
 
-* Added support for Tailwind version 3.0.0
+* Added support for Tailwind version 3.0.15
 * Updated Tailwind class icons to represent style classes, pseudo-classes and pseudo-elements.
 * Added support for Tailwind functions and directives.
 
diff --git a/README.md b/README.md
index b01a266..96814b1 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,9 @@
 
 Provides Tailwind CSS completions and a documentation sidebar for Panic's macOS code editor, Nova.
 
-<img src="https://user-images.githubusercontent.com/48892071/105522129-dacd1080-5caa-11eb-8ce9-dacd244de575.png" width="800" alt="Tailwind CSS Completion">
+**Now supports Tailwind CSS Version 3!**
 
-**Now includes a sidebar!**
+<img src="https://user-images.githubusercontent.com/48892071/105522129-dacd1080-5caa-11eb-8ce9-dacd244de575.png" width="800" alt="Tailwind CSS Completion">
 
 *The sidebar offers access to the Tailwind classes from within Nova. It makes it easy
 to learn about available Tailwind classes and access documentation!*
@@ -29,7 +29,7 @@ The Tailwind CSS extension will always provide default Tailwind CSS classes. How
 1. Attempt to read the Tailwind configuration file specified in the workspace preferences (*see screenshot below*).
 2. Search the workspace for a 'tailwind.config.js' file and attempt to read it.
 
-**As of version 3.0.1, the extension only supports customized extended colors. Support for additional customizations is coming!**
+**As of version 4.0, the extension only supports customized extended colors. Support for additional customizations is planned.**
 
 It is not necessary to include a Tailwind installation in the project, nor include a 'tailwind.config.js' file for default class suggestions.
 
@@ -41,7 +41,6 @@ To specify a Tailwind configuration file, go to the workspace preferences, selec
 ## Planned Future Features
 
 * Improved support for Tailwind CSS customization.
-* CSS/Sass file support.
 
 ## Report a Bug or Feature Request
 
diff --git a/extension.json b/extension.json
index 7584cc5..8d86751 100644
--- a/extension.json
+++ b/extension.json
@@ -3,7 +3,7 @@
   "name": "Tailwind CSS",
   "organization": "Jason Platts",
   "description": "Provides completions and a documentation sidebar for Tailwind CSS.",
-  "version": "3.0.4",
+  "version": "4.0",
   "license":"MIT",
   "repository":"https://github.com/jasonplatts/tailwindcss-nova-ext",
   "bugs":"https://github.com/jasonplatts/tailwindcss-nova-ext/issues",