diff --git a/README.md b/README.md
index 8907c7a..203d13e 100644
--- a/README.md
+++ b/README.md
@@ -67,8 +67,7 @@ Officially supported CI servers:
 | [Render](https://render.com/)                                                   | `ci.RENDER`             | ✅   |
 | [Sail CI](https://sail.ci/)                                                     | `ci.SAIL`               | ✅   |
 | [Screwdriver](https://screwdriver.cd/)                                          | `ci.SCREWDRIVER`        | ✅   |
-| [Semaphore](https://semaphoreci.com)                                            | `ci.SEMAPHORE`          | ✅   |
-| [Shippable](https://www.shippable.com/)                                         | `ci.SHIPPABLE`          | ✅   |
+| [Semaphore](https://semaphoreci.com)                                            | `ci.SEMAPHORE`          | ✅   |-
 | [Solano CI](https://www.solanolabs.com/)                                        | `ci.SOLANO`             | ✅   |
 | [Sourcehut](https://sourcehut.org/)                                             | `ci.SOURCEHUT`          | 🚫   |
 | [Strider CD](https://strider-cd.github.io/)                                     | `ci.STRIDER`            | 🚫   |
diff --git a/index.d.ts b/index.d.ts
index 8aebdcf..fcc32d5 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -61,7 +61,6 @@ export const RENDER: boolean;
 export const SAIL: boolean;
 export const SCREWDRIVER: boolean;
 export const SEMAPHORE: boolean;
-export const SHIPPABLE: boolean;
 export const SOLANO: boolean;
 export const SOURCEHUT: boolean;
 export const STRIDER: boolean;
diff --git a/test.js b/test.js
index e7b6af9..c0fcd31 100644
--- a/test.js
+++ b/test.js
@@ -467,44 +467,6 @@ test('Semaphore - Not PR', function (t) {
   t.end()
 })
 
-test('Shippable - PR', function (t) {
-  process.env.SHIPPABLE = 'true'
-  process.env.IS_PULL_REQUEST = 'true'
-
-  clearModule('./')
-  const ci = require('./')
-
-  t.equal(ci.isCI, true)
-  t.equal(ci.isPR, true)
-  t.equal(ci.name, 'Shippable')
-  t.equal(ci.SHIPPABLE, true)
-  assertVendorConstants('SHIPPABLE', ci, t)
-
-  delete process.env.SHIPPABLE
-  delete process.env.IS_PULL_REQUEST
-
-  t.end()
-})
-
-test('Semaphore - Not PR', function (t) {
-  process.env.SHIPPABLE = 'true'
-  process.env.IS_PULL_REQUEST = 'false'
-
-  clearModule('./')
-  const ci = require('./')
-
-  t.equal(ci.isCI, true)
-  t.equal(ci.isPR, false)
-  t.equal(ci.name, 'Shippable')
-  t.equal(ci.SHIPPABLE, true)
-  assertVendorConstants('SHIPPABLE', ci, t)
-
-  delete process.env.SHIPPABLE
-  delete process.env.IS_PULL_REQUEST
-
-  t.end()
-})
-
 test('Solano CI - PR', function (t) {
   process.env.TDDIUM = 'true'
   process.env.TDDIUM_PR_ID = '42'
diff --git a/vendors.json b/vendors.json
index 7bedd96..831fe84 100644
--- a/vendors.json
+++ b/vendors.json
@@ -233,14 +233,6 @@
     "env": "SEMAPHORE",
     "pr": "PULL_REQUEST_NUMBER"
   },
-  {
-    "name": "Shippable",
-    "constant": "SHIPPABLE",
-    "env": "SHIPPABLE",
-    "pr": {
-      "IS_PULL_REQUEST": "true"
-    }
-  },
   {
     "name": "Solano CI",
     "constant": "SOLANO",