diff --git a/package.json b/package.json
index 13f6e51..8d5bb83 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   "homepage": "https://github.com/Unleash/client-specification#readme",
   "devDependencies": {
     "chalk": "4.1.2",
-    "joi": "17.13.3",
+    "joi": "18.0.1",
     "murmurhash3js": "3.0.1"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 9f3e301..0bff2f0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,34 +2,44 @@
 # yarn lockfile v1
 
 
-"@hapi/hoek@^9.0.0", "@hapi/hoek@^9.3.0":
-  version "9.3.0"
-  resolved "https://registry.yarnpkg.com/@hapi/hoek/-/hoek-9.3.0.tgz#8368869dcb735be2e7f5cb7647de78e167a251fb"
-  integrity sha512-/c6rf4UJlmHlC9b5BaNvzAcFv7HZ2QHaV0D4/HNlBdvFnvQq8RI4kYdhyPCl7Xj+oWvTWQ8ujhqS53LIgAe6KQ==
-
-"@hapi/topo@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@hapi/topo/-/topo-5.1.0.tgz#dc448e332c6c6e37a4dc02fd84ba8d44b9afb012"
-  integrity sha512-foQZKJig7Ob0BMAYBfcJk8d77QtOe7Wo4ox7ff1lQYoNNAb6jwcY1ncdoy2e9wQZzvNy7ODZCYJkK8kzmcAnAg==
+"@hapi/address@^5.1.1":
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/@hapi/address/-/address-5.1.1.tgz#e9925fc1b65f5cc3fbea821f2b980e4652e84cb6"
+  integrity sha512-A+po2d/dVoY7cYajycYI43ZbYMXukuopIsqCjh5QzsBCipDtdofHntljDlpccMjIfTy6UOkg+5KPriwYch2bXA==
   dependencies:
-    "@hapi/hoek" "^9.0.0"
+    "@hapi/hoek" "^11.0.2"
 
-"@sideway/address@^4.1.5":
-  version "4.1.5"
-  resolved "https://registry.yarnpkg.com/@sideway/address/-/address-4.1.5.tgz#4bc149a0076623ced99ca8208ba780d65a99b9d5"
-  integrity sha512-IqO/DUQHUkPeixNQ8n0JA6102hT9CmaljNTPmQ1u8MEhBo/R4Q8eKLN/vGZxuebwOroDB4cbpjheD4+/sKFK4Q==
-  dependencies:
-    "@hapi/hoek" "^9.0.0"
+"@hapi/formula@^3.0.2":
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/@hapi/formula/-/formula-3.0.2.tgz#81b538060ee079481c906f599906d163c4badeaf"
+  integrity sha512-hY5YPNXzw1He7s0iqkRQi+uMGh383CGdyyIGYtB+W5N3KHPXoqychklvHhKCC9M3Xtv0OCs/IHw+r4dcHtBYWw==
 
-"@sideway/formula@^3.0.1":
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/@sideway/formula/-/formula-3.0.1.tgz#80fcbcbaf7ce031e0ef2dd29b1bfc7c3f583611f"
-  integrity sha512-/poHZJJVjx3L+zVD6g9KgHfYnb443oi7wLu/XKojDviHy6HOEOA6z1Trk5aR1dGcmPenJEgb2sK2I80LeS3MIg==
+"@hapi/hoek@^11.0.2", "@hapi/hoek@^11.0.7":
+  version "11.0.7"
+  resolved "https://registry.yarnpkg.com/@hapi/hoek/-/hoek-11.0.7.tgz#56a920793e0a42d10e530da9a64cc0d3919c4002"
+  integrity sha512-HV5undWkKzcB4RZUusqOpcgxOaq6VOAH7zhhIr2g3G8NF/MlFO75SjOr2NfuSx0Mh40+1FqCkagKLJRykUWoFQ==
+
+"@hapi/pinpoint@^2.0.1":
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/@hapi/pinpoint/-/pinpoint-2.0.1.tgz#32077e715655fc00ab8df74b6b416114287d6513"
+  integrity sha512-EKQmr16tM8s16vTT3cA5L0kZZcTMU5DUOZTuvpnY738m+jyP3JIUj+Mm1xc1rsLkGBQ/gVnfKYPwOmPg1tUR4Q==
+
+"@hapi/tlds@^1.1.1":
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/@hapi/tlds/-/tlds-1.1.3.tgz#bf5fee927d213f140cd54d4650965e504a546789"
+  integrity sha512-QIvUMB5VZ8HMLZF9A2oWr3AFM430QC8oGd0L35y2jHpuW6bIIca6x/xL7zUf4J7L9WJ3qjz+iJII8ncaeMbpSg==
+
+"@hapi/topo@^6.0.2":
+  version "6.0.2"
+  resolved "https://registry.yarnpkg.com/@hapi/topo/-/topo-6.0.2.tgz#f219c1c60da8430228af4c1f2e40c32a0d84bbb4"
+  integrity sha512-KR3rD5inZbGMrHmgPxsJ9dbi6zEK+C3ZwUwTa+eMwWLz7oijWUTWD2pMSNNYJAU6Qq+65NkxXjqHr/7LM2Xkqg==
+  dependencies:
+    "@hapi/hoek" "^11.0.2"
 
-"@sideway/pinpoint@^2.0.0":
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/@sideway/pinpoint/-/pinpoint-2.0.0.tgz#cff8ffadc372ad29fd3f78277aeb29e632cc70df"
-  integrity sha512-RNiOoTPkptFtSVzQevY/yWtZwf/RxyVnPy/OcA9HBM3MlGDnBEYL5B41H0MTn0Uec8Hi+2qUtTfG2WWZBmMejQ==
+"@standard-schema/spec@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@standard-schema/spec/-/spec-1.0.0.tgz#f193b73dc316c4170f2e82a881da0f550d551b9c"
+  integrity sha512-m2bOd0f2RT9k8QJx1JN85cZYyH1RqFBdlwtkSlf4tBDYLCiiZnv1fIIwacK6cqwXavOydf0NPToMQgpKq+dVlA==
 
 ansi-styles@^4.1.0:
   version "4.3.0"
@@ -63,16 +73,18 @@ has-flag@^4.0.0:
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-4.0.0.tgz#944771fd9c81c81265c4d6941860da06bb59479b"
   integrity sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==
 
-joi@17.13.3:
-  version "17.13.3"
-  resolved "https://registry.yarnpkg.com/joi/-/joi-17.13.3.tgz#0f5cc1169c999b30d344366d384b12d92558bcec"
-  integrity sha512-otDA4ldcIx+ZXsKHWmp0YizCweVRZG96J10b0FevjfuncLO1oX59THoAmHkNubYJ+9gWsYsp5k8v4ib6oDv1fA==
+joi@18.0.1:
+  version "18.0.1"
+  resolved "https://registry.yarnpkg.com/joi/-/joi-18.0.1.tgz#1e1885d035cc6ca1624e81bf22112e7c1ee38e1b"
+  integrity sha512-IiQpRyypSnLisQf3PwuN2eIHAsAIGZIrLZkd4zdvIar2bDyhM91ubRjy8a3eYablXsh9BeI/c7dmPYHca5qtoA==
   dependencies:
-    "@hapi/hoek" "^9.3.0"
-    "@hapi/topo" "^5.1.0"
-    "@sideway/address" "^4.1.5"
-    "@sideway/formula" "^3.0.1"
-    "@sideway/pinpoint" "^2.0.0"
+    "@hapi/address" "^5.1.1"
+    "@hapi/formula" "^3.0.2"
+    "@hapi/hoek" "^11.0.7"
+    "@hapi/pinpoint" "^2.0.1"
+    "@hapi/tlds" "^1.1.1"
+    "@hapi/topo" "^6.0.2"
+    "@standard-schema/spec" "^1.0.0"
 
 murmurhash3js@3.0.1:
   version "3.0.1"