diff --git a/lib/lookup.json b/lib/lookup.json
index 979c92a7..37952d5e 100644
--- a/lib/lookup.json
+++ b/lib/lookup.json
@@ -24,6 +24,23 @@
     "maintainers": "cjihrig",
     "prefix": "v"
   },
+  "@yarnpkg/cli": {
+    "envVar": { "TEST_IGNORE_TIMEOUT_FAILURES": true },
+    "install": ["install", "--mode", "skip-build"],
+    "maintainers": ["arcanis", "merceyz", "paul-soporan", "larixer"],
+    "head": true,
+    "repo": "https://github.com/yarnpkg/berry",
+    "scripts": [
+      "build:cli --no-minify",
+      "typecheck:all",
+      "test:lint",
+      "test:unit --testPathIgnorePatterns ./packages/plugin-patch/tests/diffFolders.test.ts",
+      "test:integration --runInBand --testPathIgnorePatterns ./packages/acceptance-tests/pkg-tests-specs/sources/commands/patchCommit.test.ts ./packages/acceptance-tests/pkg-tests-specs/sources/commands/patch.test.ts ./packages/acceptance-tests/pkg-tests-specs/sources/protocols/git.test.js ./packages/acceptance-tests/pkg-tests-specs/sources/script.test.js"
+    ],
+    "flaky": ["ppc", "fedora", "debian", "win"],
+    "timeout": 3000000,
+    "yarn": true
+  },
   "JSONStream": {
     "prefix": "v",
     "skip": ["win32", "14"],