diff --git a/README.md b/README.md
index bcc5914..e9bf846 100644
--- a/README.md
+++ b/README.md
@@ -303,6 +303,7 @@ Kroki currently supports the following diagram libraries:
 * [BPMN](https://github.com/bpmn-io/bpmn-js): `bpmn`
 * [Bytefield](https://github.com/Deep-Symmetry/bytefield-svg/): `bytefield`
 * [C4 (PlantUML)](https://github.com/RicardoNiepel/C4-PlantUML): `c4plantuml`
+* [D2](https://d2lang.com/tour/intro/): `d2`
 * [DBML](https://www.dbml.org/home/): `dbml`
 * [Ditaa](http://ditaa.sourceforge.net): `ditaa`
 * [ERD](https://github.com/BurntSushi/erd): `erd`
diff --git a/dist/browser/asciidoctor-kroki.js b/dist/browser/asciidoctor-kroki.js
index d82fd0f..ac276b7 100644
--- a/dist/browser/asciidoctor-kroki.js
+++ b/dist/browser/asciidoctor-kroki.js
@@ -18508,6 +18508,7 @@ module.exports.register = function register (registry, context = {}) {
     'bpmn',
     'bytefield',
     'c4plantuml',
+    'd2',
     'dbml',
     'ditaa',
     'erd',
diff --git a/ruby/lib/asciidoctor/extensions/asciidoctor_kroki/extension.rb b/ruby/lib/asciidoctor/extensions/asciidoctor_kroki/extension.rb
index 0846dde..757ae9f 100644
--- a/ruby/lib/asciidoctor/extensions/asciidoctor_kroki/extension.rb
+++ b/ruby/lib/asciidoctor/extensions/asciidoctor_kroki/extension.rb
@@ -111,6 +111,7 @@ module Kroki
       bpmn
       bytefield
       c4plantuml
+      d2
       dbml
       ditaa
       erd
diff --git a/src/asciidoctor-kroki.js b/src/asciidoctor-kroki.js
index 7ffff91..1d5b42a 100644
--- a/src/asciidoctor-kroki.js
+++ b/src/asciidoctor-kroki.js
@@ -224,6 +224,7 @@ module.exports.register = function register (registry, context = {}) {
     'bpmn',
     'bytefield',
     'c4plantuml',
+    'd2',
     'dbml',
     'ditaa',
     'erd',