diff --git a/_extensions/webr/_extension.yml b/_extensions/webr/_extension.yml
index 70ceb0f..ac785eb 100644
--- a/_extensions/webr/_extension.yml
+++ b/_extensions/webr/_extension.yml
@@ -1,7 +1,7 @@
 name: webr
 title: Embedded webr code cells
 author: James Joseph Balamuta
-version: 0.4.2
+version: 0.4.3-dev.1
 quarto-required: ">=1.4.554"
 contributes:
   filters:
diff --git a/_extensions/webr/webr-serviceworker.js b/_extensions/webr/webr-serviceworker.js
deleted file mode 100644
index 9f97290..0000000
--- a/_extensions/webr/webr-serviceworker.js
+++ /dev/null
@@ -1 +0,0 @@
-importScripts('https://webr.r-wasm.org/v0.3.3/webr-serviceworker.js');
diff --git a/_extensions/webr/webr-worker.js b/_extensions/webr/webr-worker.js
deleted file mode 100644
index e41323f..0000000
--- a/_extensions/webr/webr-worker.js
+++ /dev/null
@@ -1 +0,0 @@
-importScripts('https://webr.r-wasm.org/v0.3.3/webr-worker.js');
diff --git a/_extensions/webr/webr.lua b/_extensions/webr/webr.lua
index fd8af70..00e0d7a 100644
--- a/_extensions/webr/webr.lua
+++ b/_extensions/webr/webr.lua
@@ -15,7 +15,7 @@ local hasDoneWebRSetup = false
 
 --- Define a base compatibile version
 ---@type string
-local baseVersionWebR = "0.3.3"
+local baseVersionWebR = "0.4.0"
 
 --- Define where webR can be found
 ---@type string
diff --git a/docs/qwebr-release-notes.qmd b/docs/qwebr-release-notes.qmd
index fa772c3..529e3e8 100644
--- a/docs/qwebr-release-notes.qmd
+++ b/docs/qwebr-release-notes.qmd
@@ -12,6 +12,12 @@ format:
 Features listed under the `-dev` version have not yet been solidified and may change at any point.
 :::
 
+# 0.4.3-dev: ???? (??-??-????)
+
+## Features
+
+- Upgraded the embedded version of webR to v0.4.0. ([#219](https://github.com/coatless/quarto-webr/pulls/219))
+
 # 0.4.2: A Change Is Gonna Come (06-24-2024)
 
 ## Breaking Changes