diff --git a/package.json b/package.json
index 55fb282872edb29dbc4bb07c5ae2569af773bd3b..e0bd3704a58932d257ef650e4760eca73b156ea2 100644
--- a/package.json
+++ b/package.json
@@ -5,9 +5,9 @@
     "test": "ajv validate --errors=text --verbose --all-errors -d examples/**/*.json --spec=draft2020 -c ajv-formats -s dist/set-payload.schema.json"
   },
   "dependencies": {
-    "@apidevtools/json-schema-ref-parser": "^9.0.9",
-    "ajv-cli": "^5.0.0",
-    "ajv-formats": "^2.1.0"
+    "@apidevtools/json-schema-ref-parser": "9.0.9",
+    "ajv-cli": "5.0.0",
+    "ajv-formats": "2.1.1"
   },
   "license": "EUPL-1.2"
 }
diff --git a/yarn.lock b/yarn.lock
index d6906df67f1392a85301d71ed5f302cbc575c602..3f1c413b99e6e0bec86d99cb8b47e1c199362253 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,7 +2,7 @@
 # yarn lockfile v1
 
 
-"@apidevtools/json-schema-ref-parser@^9.0.9":
+"@apidevtools/json-schema-ref-parser@9.0.9":
   version "9.0.9"
   resolved "https://registry.yarnpkg.com/@apidevtools/json-schema-ref-parser/-/json-schema-ref-parser-9.0.9.tgz#d720f9256e3609621280584f2b47ae165359268b"
   integrity sha512-GBD2Le9w2+lVFoc4vswGI/TjkNIZSVp7+9xPf+X3uidBfWnAeUWmquteSyt0+VCrhNMWj/FTABISQrD3Z/YA+w==
@@ -22,7 +22,7 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.11.tgz#d421b6c527a3037f7c84433fd2c4229e016863d3"
   integrity sha512-wOuvG1SN4Us4rez+tylwwwCV1psiNVOkJeM3AUWUNWg/jDQY2+HE/444y5gc+jBmRqASOm2Oeh5c1axHobwRKQ==
 
-ajv-cli@^5.0.0:
+ajv-cli@5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/ajv-cli/-/ajv-cli-5.0.0.tgz#78956ed2934e6dde4c9e696b587be1c2998862e8"
   integrity sha512-LY4m6dUv44HTyhV+u2z5uX4EhPYTM38Iv1jdgDJJJCyOOuqB8KtZEGjPZ2T+sh5ZIJrXUfgErYx/j3gLd3+PlQ==
@@ -35,7 +35,7 @@ ajv-cli@^5.0.0:
     json5 "^2.1.3"
     minimist "^1.2.0"
 
-ajv-formats@^2.1.0:
+ajv-formats@2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ajv-formats/-/ajv-formats-2.1.1.tgz#6e669400659eb74973bbf2e33327180a0996b520"
   integrity sha512-Wx0Kx52hxE7C18hkMEggYlEifqWZtYaRgouJor+WMdPnQyEK13vgEWyVNup7SoeeoLMsr4kf5h6dOW11I15MUA==