diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2fadf397f..49da6b8751 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Unreleased
 
+## [6.6.0] - 2026-03-02
+
+### Fixed
+- Remove unneeded `type="text/javascript"` attribute from `<style>` tag [[#5454](https://github.com/plotly/plotly.py/pull/5454)], with thanks to @hannob for the contribution!
+- Remove global warning format side effect [[#5481](https://github.com/plotly/plotly.py/pull/5481)], with thanks to @emmanuel-ferdman for the contribution!
+- Fix spurious engine deprecation warning in write_image [[#5517](https://github.com/plotly/plotly.py/pull/5517)], with thanks to @mosh3eb for the contribution!
+
 ### Updated
 - Update plotly.js from version 3.3.1 to version 3.4.0. See the plotly.js [release notes](https://github.com/plotly/plotly.js/releases/tag/v3.4.0) for more information. [[#5527](https://github.com/plotly/plotly.py/pull/5527)]. Notable changes include:
   - Add support for clicking legend titles to toggle visibility of all traces in legend [[#7698](https://github.com/plotly/plotly.js/pull/7698)]
diff --git a/CITATION.cff b/CITATION.cff
index f4238373a3..863e6d7316 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -9,7 +9,7 @@ authors:
 - family-names: "Parmer"
   given-names: "Chris"
 title: "An interactive, open-source, and browser-based graphing library for Python"
-version: 6.5.2
+version: 6.6.0
 doi: 10.5281/zenodo.14503524
-date-released: 2026-01-14
+date-released: 2026-03-02
 url: "https://github.com/plotly/plotly.py"
diff --git a/pyproject.toml b/pyproject.toml
index 9757a6a987..15c4628a91 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ classifiers = [
 ]
 requires-python = ">=3.8"
 license = {file="LICENSE.txt"}
-version = "6.5.2"
+version = "6.6.0"
 dependencies = [
     "narwhals>=1.15.1",
     "packaging"
diff --git a/uv.lock b/uv.lock
index 22aac76b08..41cee9778d 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1,5 +1,5 @@
 version = 1
-revision = 3
+revision = 2
 requires-python = ">=3.8"
 resolution-markers = [
     "python_full_version >= '3.12'",
@@ -4277,7 +4277,7 @@ wheels = [
 
 [[package]]
 name = "plotly"
-version = "6.5.2"
+version = "6.6.0"
 source = { editable = "." }
 dependencies = [
     { name = "narwhals" },