diff --git a/README.md b/README.md
index 36b0fa8..4c6548f 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,7 @@ Officially supported CI servers:
 | [Magnum CI](https://magnum-ci.com)                                              | `ci.MAGNUM`             | 🚫   |
 | [Netlify CI](https://www.netlify.com/)                                          | `ci.NETLIFY`            | ✅   |
 | [Nevercode](http://nevercode.io/)                                               | `ci.NEVERCODE`          | ✅   |
+| [ReleaseHub](https://releasehub.com/)                                           | `ci.RELEASEHUB`         | ✅   |
 | [Render](https://render.com/)                                                   | `ci.RENDER`             | ✅   |
 | [Sail CI](https://sail.ci/)                                                     | `ci.SAIL`               | ✅   |
 | [Screwdriver](https://screwdriver.cd/)                                          | `ci.SCREWDRIVER`        | ✅   |
diff --git a/index.d.ts b/index.d.ts
index 8904f50..816d63a 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -55,6 +55,7 @@ export const JENKINS: boolean;
 export const MAGNUM: boolean;
 export const NETLIFY: boolean;
 export const NEVERCODE: boolean;
+export const RELEASEHUB: boolean;
 export const RENDER: boolean;
 export const SAIL: boolean;
 export const SCREWDRIVER: boolean;
diff --git a/test.js b/test.js
index 9313789..d914489 100644
--- a/test.js
+++ b/test.js
@@ -909,6 +909,22 @@ test('Sourcehit', function (t) {
   t.end()
 })
 
+test('ReleaseHub', function (t) {
+  process.env.RELEASE_BUILD_ID = '1a'
+
+  clearModule('./')
+  const ci = require('./')
+
+  t.equal(ci.isCI, true)
+  t.equal(ci.name, 'ReleaseHub')
+  t.equal(ci.RELEASEHUB, true)
+  assertVendorConstants('RELEASEHUB', ci, t)
+
+  delete process.env.RELEASE_BUILD_ID
+
+  t.end()
+})
+
 function assertVendorConstants (expect, ci, t) {
   ci._vendors.forEach(function (constant) {
     let bool = constant === expect
diff --git a/vendors.json b/vendors.json
index 26315b9..00c1601 100644
--- a/vendors.json
+++ b/vendors.json
@@ -161,6 +161,11 @@
     "env": "NEVERCODE",
     "pr": { "env": "NEVERCODE_PULL_REQUEST", "ne": "false" }
   },
+  {
+    "name": "ReleaseHub",
+    "constant": "RELEASEHUB",
+    "env": "RELEASE_BUILD_ID"
+  },
   {
     "name": "Render",
     "constant": "RENDER",