diff --git a/dist/index.js b/dist/index.js
index 4f264d3ea..0d87e2478 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -64428,6 +64428,23 @@ internals.functions = {
         return condition ? then : otherwise;
     },
 
+    length(item) {
+
+        if (typeof item === 'string') {
+            return item.length;
+        }
+
+        if (!item || typeof item !== 'object') {
+            return null;
+        }
+
+        if (Array.isArray(item)) {
+            return item.length;
+        }
+
+        return Object.keys(item).length;
+    },
+
     msg(code) {
 
         const [value, state, prefs, local, options] = this;
@@ -131271,7 +131288,7 @@ module.exports = JSON.parse('{"assert":true,"node:assert":[">= 14.18 && < 15",">
 /***/ ((module) => {
 
 "use strict";
-module.exports = JSON.parse('{"name":"joi","description":"Object schema validation","version":"17.5.0","repository":"git://github.com/sideway/joi","main":"lib/index.js","types":"lib/index.d.ts","browser":"dist/joi-browser.min.js","files":["lib/**/*","dist/*"],"keywords":["schema","validation"],"dependencies":{"@hapi/hoek":"^9.0.0","@hapi/topo":"^5.0.0","@sideway/address":"^4.1.3","@sideway/formula":"^3.0.0","@sideway/pinpoint":"^2.0.0"},"devDependencies":{"@hapi/bourne":"2.x.x","@hapi/code":"8.x.x","@hapi/joi-legacy-test":"npm:@hapi/joi@15.x.x","@hapi/lab":"24.x.x","typescript":"4.3.x"},"scripts":{"prepublishOnly":"cd browser && npm install && npm run build","test":"lab -t 100 -a @hapi/code -L -Y","test-cov-html":"lab -r html -o coverage.html -a @hapi/code"},"license":"BSD-3-Clause"}');
+module.exports = JSON.parse('{"name":"joi","description":"Object schema validation","version":"17.6.0","repository":"git://github.com/sideway/joi","main":"lib/index.js","types":"lib/index.d.ts","browser":"dist/joi-browser.min.js","files":["lib/**/*","dist/*"],"keywords":["schema","validation"],"dependencies":{"@hapi/hoek":"^9.0.0","@hapi/topo":"^5.0.0","@sideway/address":"^4.1.3","@sideway/formula":"^3.0.0","@sideway/pinpoint":"^2.0.0"},"devDependencies":{"@hapi/bourne":"2.x.x","@hapi/code":"8.x.x","@hapi/joi-legacy-test":"npm:@hapi/joi@15.x.x","@hapi/lab":"24.x.x","typescript":"4.3.x"},"scripts":{"prepublishOnly":"cd browser && npm install && npm run build","test":"lab -t 100 -a @hapi/code -L -Y","test-cov-html":"lab -r html -o coverage.html -a @hapi/code"},"license":"BSD-3-Clause"}');
 
 /***/ }),
 
diff --git a/package.json b/package.json
index 9d0c39473..8cfd43138 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "deepmerge": "4.2.2",
     "escape-string-regexp": "4.0.0",
     "ignore": "5.2.0",
-    "joi": "17.5.0",
+    "joi": "17.6.0",
     "lodash": "4.17.21",
     "probot": "12.2.1",
     "regex-parser": "2.2.11",
diff --git a/yarn.lock b/yarn.lock
index 851ec04be..c117a2709 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3235,10 +3235,10 @@ jmespath@^0.15.0:
   resolved "https://registry.yarnpkg.com/jmespath/-/jmespath-0.15.0.tgz#a3f222a9aae9f966f5d27c796510e28091764217"
   integrity sha1-o/Iiqarp+Wb10nx5ZRDigJF2Qhc=
 
-joi@17.5.0, joi@^17.4.0:
-  version "17.5.0"
-  resolved "https://registry.yarnpkg.com/joi/-/joi-17.5.0.tgz#7e66d0004b5045d971cf416a55fb61d33ac6e011"
-  integrity sha512-R7hR50COp7StzLnDi4ywOXHrBrgNXuUUfJWIR5lPY5Bm/pOD3jZaTwpluUXVLRWcoWZxkrHBBJ5hLxgnlehbdw==
+joi@17.6.0, joi@^17.4.0:
+  version "17.6.0"
+  resolved "https://registry.yarnpkg.com/joi/-/joi-17.6.0.tgz#0bb54f2f006c09a96e75ce687957bd04290054b2"
+  integrity sha512-OX5dG6DTbcr/kbMFj0KGYxuew69HPcAE3K/sZpEV2nP6e/j/C0HV+HNiBPCASxdx5T7DMoa0s8UeHWMnb6n2zw==
   dependencies:
     "@hapi/hoek" "^9.0.0"
     "@hapi/topo" "^5.0.0"