diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72d7fcf..4997a87 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,25 @@ All notable changes to this project will be documented in this file, per [the Ke
 
 ## [Unreleased] - TBD
 
+## [0.4.0] - 2025-05-19
+**Note that this release bumps the WordPress minimum version from 6.4 to 6.6.**
+
+### Changed
+- Bump WordPress "tested up to" version 6.8 (props [@thrijith](https://github.com/thrijith), [@jeffpaul](https://github.com/jeffpaul) via [#42](https://github.com/10up/embed-block-figma/pull/42), [#43](https://github.com/10up/embed-block-figma/pull/43), [#48](https://github.com/10up/embed-block-figma/pull/48), [#49](https://github.com/10up/embed-block-figma/pull/49)).
+- Bump WordPress "requires at least" version 6.6 (props [@thrijith](https://github.com/thrijith), [@jeffpaul](https://github.com/jeffpaul) via [#42](https://github.com/10up/embed-block-figma/pull/42), [#43](https://github.com/10up/embed-block-figma/pull/43), [#48](https://github.com/10up/embed-block-figma/pull/48), [#49](https://github.com/10up/embed-block-figma/pull/49)).
+- Bump Support Level from `Beta` to `Stable` (props [@jeffpaul](https://github.com/jeffpaul), [@dkotter](https://github.com/dkotter) via [#52](https://github.com/10up/embed-block-figma/pull/52)).
+
+### Security
+- Bump `express` from 4.21.1 to 4.21.2 (props [@dependabot](https://github.com/apps/dependabot), [@dkotter](https://github.com/dkotter) via [#47](https://github.com/10up/embed-block-figma/pull/47)).
+- Bump `body-parser` from 1.20.2 to 1.20.3 (props [@dependabot](https://github.com/apps/dependabot), [@iamdharmesh](https://github.com/iamdharmesh) via [#38](https://github.com/10up/embed-block-figma/pull/38)).
+- Bump `http-proxy-middleware` from 2.0.7 to 2.0.9 and `tar-fs` from 2.1.1 to 3.0.8 (props [@dependabot](https://github.com/apps/dependabot), [@dkotter](https://github.com/dkotter) via [#53](https://github.com/10up/embed-block-figma/pull/53)).
+
+### Developer
+- Add E2E tests (props [@sksaju](https://github.com/sksaju), [@jeffpaul](https://github.com/jeffpaul), [@iamdharmesh](https://github.com/iamdharmesh), [@dkotter](https://github.com/dkotter) via [#37](https://github.com/10up/embed-block-figma/pull/37)).
+- Update badges in the `README.md` file (props [@jeffpaul](https://github.com/jeffpaul), [@dkotter](https://github.com/dkotter) via [#39](https://github.com/10up/embed-block-figma/pull/39), [#51](https://github.com/10up/embed-block-figma/pull/51)).
+- Update the plugin preview blueprint to fix errors (props [@jeffpaul](https://github.com/jeffpaul), [@dkotter](https://github.com/dkotter) via [#50](https://github.com/10up/embed-block-figma/pull/50)).
+- Update all third-party actions our workflows rely on to use versions based on specific commit hashes (props [@jeffpaul](https://github.com/jeffpaul), [@dkotter](https://github.com/dkotter) via [#45](https://github.com/10up/embed-block-figma/pull/45)).
+
 ## [0.3.1] - 2024-09-05
 **Initial plugin release on WordPress.org 🎉**
 
@@ -35,6 +54,7 @@ All notable changes to this project will be documented in this file, per [the Ke
 - Initial private plugin release.
 
 [Unreleased]: https://github.com/10up/embed-block-figma/compare/trunk...develop
+[0.4.0]: https://github.com/10up/embed-block-figma/compare/0.3.1...0.4.0
 [0.3.1]: https://github.com/10up/embed-block-figma/compare/0.3.0...0.3.1
 [0.3.0]: https://github.com/10up/embed-block-figma/compare/0.2.0...0.3.0
 [0.2.0]: https://github.com/10up/embed-block-figma/compare/0.1.0...0.2.0
diff --git a/CREDITS.md b/CREDITS.md
index d1e38e1..47d77fd 100644
--- a/CREDITS.md
+++ b/CREDITS.md
@@ -10,7 +10,7 @@ The following individuals are responsible for curating the list of issues, respo
 
 Thank you to all the people who have already contributed to this repository via bug reports, code, design, ideas, project management, translation, testing, etc.
 
-[Darin Kotter (@dkotter)](https://github.com/dkotter), [Jeffrey Paul (@jeffpaul)](https://github.com/jeffpaul), [Faisal Alvi (@faisal-alvi)](https://github.com/faisal-alvi), [Konstantinos Galanakis (@kmgalanakis)](https://github.com/kmgalanakis), [Ankit Gupta (@ankitguptaindia)](https://github.com/ankitguptaindia), [Fabian Kägy (@fabiankaegy)](https://github.com/fabiankaegy), [Zubair Bhatti](https://www.linkedin.com/in/zbhatti89/), [Peter Sorensen (@psorensen)](https://github.com/psorensen), [Thrijith Thankachan (@thrijith)](https://github.com/thrijith).
+[Darin Kotter (@dkotter)](https://github.com/dkotter), [Jeffrey Paul (@jeffpaul)](https://github.com/jeffpaul), [Faisal Alvi (@faisal-alvi)](https://github.com/faisal-alvi), [Konstantinos Galanakis (@kmgalanakis)](https://github.com/kmgalanakis), [Ankit Gupta (@ankitguptaindia)](https://github.com/ankitguptaindia), [Fabian Kägy (@fabiankaegy)](https://github.com/fabiankaegy), [Zubair Bhatti](https://www.linkedin.com/in/zbhatti89/), [Peter Sorensen (@psorensen)](https://github.com/psorensen), [Thrijith Thankachan (@thrijith)](https://github.com/thrijith), [Dharmesh Patel (@iamdharmesh)](https://github.com/iamdharmesh), [Shazahan Kabir Saju (@sksaju)](https://github.com/sksaju).
 
 ## Libraries
 
diff --git a/embed-block-figma.php b/embed-block-figma.php
index a754c8a..62d0207 100644
--- a/embed-block-figma.php
+++ b/embed-block-figma.php
@@ -3,7 +3,7 @@
  * Plugin Name:       Embed Block for Figma
  * Plugin URI:        https://github.com/10up/embed-block-figma
  * Description:       Adds a Figma embed block to the WordPress Block Editor.
- * Version:           0.3.1
+ * Version:           0.4.0
  * Requires at least: 6.6
  * Requires PHP:      7.4
  * Author:            10up
@@ -21,7 +21,7 @@
 use function TenUpToolkit\set_dist_url_path;
 
 // Useful global constants.
-define( 'FIGMA_BLOCK_VERSION', '0.3.1' );
+define( 'FIGMA_BLOCK_VERSION', '0.4.0' );
 define( 'FIGMA_BLOCK_URL', plugin_dir_url( __FILE__ ) );
 define( 'FIGMA_BLOCK_PATH', plugin_dir_path( __FILE__ ) );
 define( 'FIGMA_BLOCK_INC', FIGMA_BLOCK_PATH . 'includes/' );
diff --git a/package-lock.json b/package-lock.json
index 3ba848b..8e39934 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "embed-block-figma",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "embed-block-figma",
-      "version": "0.3.1",
+      "version": "0.4.0",
       "license": "GPL-2.0-or-later",
       "devDependencies": {
         "@10up/cypress-wp-utils": "^0.5.0",
diff --git a/package.json b/package.json
index bc28d26..18f24ec 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "embed-block-figma",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "description": "Adds a Figma embed block to the WordPress Block Editor.",
   "homepage": "https://github.com/10up/embed-block-figma",
   "license": "GPL-2.0-or-later",
diff --git a/readme.txt b/readme.txt
index 7fa5c66..6665cf6 100644
--- a/readme.txt
+++ b/readme.txt
@@ -2,7 +2,7 @@
 Contributors:      10up, dkotter, jeffpaul
 Tags:              gutenberg, figma, embed, blocks, custom blocks
 Tested up to:      6.8
-Stable tag:        0.3.1
+Stable tag:        0.4.0
 License:           GPL-2.0-or-later
 License URI:       https://spdx.org/licenses/GPL-2.0-or-later.html
 
@@ -29,6 +29,17 @@ Assuming it's a valid URL, the block will automatically fetch the Figma file and
 
 == Changelog ==
 
+= 0.4.0 - 2025-05-19 =
+
+**Note that this release bumps the WordPress minimum version from 6.4 to 6.6.**
+
+* **Changed:** Bump WordPress "tested up to" version 6.8 (props [@thrijith](https://github.com/thrijith), [@jeffpaul](https://github.com/jeffpaul) via [#42](https://github.com/10up/embed-block-figma/pull/42), [#43](https://github.com/10up/embed-block-figma/pull/43), [#48](https://github.com/10up/embed-block-figma/pull/48), [#49](https://github.com/10up/embed-block-figma/pull/49)).
+* **Changed:** Bump WordPress "requires at least" version 6.6 (props [@thrijith](https://github.com/thrijith), [@jeffpaul](https://github.com/jeffpaul) via [#42](https://github.com/10up/embed-block-figma/pull/42), [#43](https://github.com/10up/embed-block-figma/pull/43), [#48](https://github.com/10up/embed-block-figma/pull/48), [#49](https://github.com/10up/embed-block-figma/pull/49)).
+* **Changed:** Bump Support Level from `Beta` to `Stable` (props [@jeffpaul](https://github.com/jeffpaul), [@dkotter](https://github.com/dkotter) via [#52](https://github.com/10up/embed-block-figma/pull/52)).
+* **Security:** Bump `express` from 4.21.1 to 4.21.2 (props [@dependabot](https://github.com/apps/dependabot), [@dkotter](https://github.com/dkotter) via [#47](https://github.com/10up/embed-block-figma/pull/47)).
+* **Security:** Bump `body-parser` from 1.20.2 to 1.20.3 (props [@dependabot](https://github.com/apps/dependabot), [@iamdharmesh](https://github.com/iamdharmesh) via [#38](https://github.com/10up/embed-block-figma/pull/38)).
+* **Security:** Bump `http-proxy-middleware` from 2.0.7 to 2.0.9 and `tar-fs` from 2.1.1 to 3.0.8 (props [@dependabot](https://github.com/apps/dependabot), [@dkotter](https://github.com/dkotter) via [#53](https://github.com/10up/embed-block-figma/pull/53)).
+
 = 0.3.1 - 2024-09-05 =
 
 **Initial plugin release on WordPress.org 🎉**
@@ -51,3 +62,8 @@ Assuming it's a valid URL, the block will automatically fetch the Figma file and
 = 0.1.0 - 2024-06-25 =
 
 * Initial private plugin release.
+
+== Upgrade Notice ==
+
+= 0.4.0 =
+Note that this release bumps the WordPress minimum version from 6.4 to 6.6.