diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e551badb..2c8527d65 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [2.7.6] - 2023-11-26
+
+### Fixed
+
+- Some Mermaid diagram elements not styled correctly in dark mode ([#706](https://github.com/jpanther/congo/issues/706))
+
 ## [2.7.5] - 2023-11-25
 
 ### Added
@@ -797,7 +803,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Advanced customisation using simple Tailwind colour definitions and styles
 - Fully documented
 
-[Unreleased]: https://github.com/jpanther/congo/compare/v2.7.5...HEAD
+[Unreleased]: https://github.com/jpanther/congo/compare/v2.7.6...HEAD
+[2.7.6]: https://github.com/jpanther/congo/compare/v2.7.5...v2.7.6
 [2.7.5]: https://github.com/jpanther/congo/compare/v2.7.4...v2.7.5
 [2.7.4]: https://github.com/jpanther/congo/compare/v2.7.3...v2.7.4
 [2.7.3]: https://github.com/jpanther/congo/compare/v2.7.2...v2.7.3
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 000000000..ad2925b2d
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,43 @@
+# Code of Conduct - Congo
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to make participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, sex characteristics, gender identity and expression, level of experience, education, socio-economic status, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behaviour that contributes to a positive environment for our community include:
+
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologising to those affected by our mistakes, and learning from the experience
+- Focusing on what is best not just for us as individuals, but for the overall community
+
+Examples of unacceptable behaviour include:
+
+- The use of sexualised language or imagery, and sexual attention or advances
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or email address, without their explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying and enforcing our standards of acceptable behaviour and will take appropriate and fair corrective action in response to any instances of unacceptable behaviour.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviours that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when an individual is officially representing the community in public spaces. Examples of representing our community include using an official e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behaviour may be reported to the [project maintainer](https://github.com/jpanther/). All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the reporter of any incident.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant](https://contributor-covenant.org/), version [1.4](https://www.contributor-covenant.org/version/1/4/code-of-conduct/code_of_conduct.md) and [2.0](https://www.contributor-covenant.org/version/2/0/code_of_conduct/code_of_conduct.md), and was generated by [contributing-gen](https://github.com/bttger/contributing-gen).
diff --git a/assets/css/compiled/main.css b/assets/css/compiled/main.css
index f08aa08c1..8b8868aa4 100644
--- a/assets/css/compiled/main.css
+++ b/assets/css/compiled/main.css
@@ -1,4 +1,4 @@
-/*! Congo v2.7.5 | MIT License | https://github.com/jpanther/congo */
+/*! Congo v2.7.6 | MIT License | https://github.com/jpanther/congo */
 
 /*! tailwindcss v3.3.5 | MIT License | https://tailwindcss.com */
 
diff --git a/assets/css/main.css b/assets/css/main.css
index 2f526198d..d23b285eb 100644
--- a/assets/css/main.css
+++ b/assets/css/main.css
@@ -1,4 +1,4 @@
-/*! Congo v2.7.5 | MIT License | https://github.com/jpanther/congo */
+/*! Congo v2.7.6 | MIT License | https://github.com/jpanther/congo */
 
 @tailwind base;
 @tailwind components;
diff --git a/assets/js/mermaid.js b/assets/js/mermaid.js
index 94795fe44..9704c86c0 100644
--- a/assets/js/mermaid.js
+++ b/assets/js/mermaid.js
@@ -2,19 +2,29 @@ function css(name) {
   return "rgb(" + getComputedStyle(document.documentElement).getPropertyValue(name) + ")";
 }
 
+let isDark = document.documentElement.classList.contains("dark");
+
 mermaid.initialize({
   theme: "base",
   themeVariables: {
     background: css("--color-neutral"),
-    primaryColor: css("--color-primary-200"),
-    secondaryColor: css("--color-secondary-200"),
-    tertiaryColor: css("--color-neutral-100"),
-    primaryBorderColor: css("--color-primary-400"),
+    primaryTextColor: isDark ? css("--color-neutral-200") : css("--color-neutral-700"),
+    primaryColor: isDark ? css("--color-primary-700") : css("--color-primary-200"),
+    secondaryColor: isDark ? css("--color-secondary-700") : css("--color-secondary-200"),
+    tertiaryColor: isDark ? css("--color-neutral-700") : css("--color-neutral-100"),
+    primaryBorderColor: isDark ? css("--color-primary-500") : css("--color-primary-400"),
     secondaryBorderColor: css("--color-secondary-400"),
-    tertiaryBorderColor: css("--color-neutral-400"),
-    lineColor: css("--color-neutral-600"),
+    tertiaryBorderColor: isDark ? css("--color-neutral-300") : css("--color-neutral-400"),
+    lineColor: isDark ? css("--color-neutral-300") : css("--color-neutral-600"),
     fontFamily:
       "ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,segoe ui,Roboto,helvetica neue,Arial,noto sans,sans-serif",
     fontSize: "16px",
+    pieTitleTextSize: "19px",
+    pieSectionTextSize: "16px",
+    pieLegendTextSize: "16px",
+    pieStrokeWidth: "1px",
+    pieOuterStrokeWidth: "0.5px",
+    pieStrokeColor: isDark ? css("--color-neutral-300") : css("--color-neutral-400"),
+    pieOpacity: "1",
   },
 });
diff --git a/package.json b/package.json
index 761fe3cbe..2d2770432 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hugo-congo-theme",
-  "version": "2.7.5",
+  "version": "2.7.6",
   "description": "Congo theme for Hugo",
   "scripts": {
     "preinstall": "rimraf assets/lib",