diff --git a/packages/core/src/ruleset/validation/ajv.ts b/packages/core/src/ruleset/validation/ajv.ts
index 0686aee26..5175cec60 100644
--- a/packages/core/src/ruleset/validation/ajv.ts
+++ b/packages/core/src/ruleset/validation/ajv.ts
@@ -1,4 +1,4 @@
-import Ajv, { _, ValidateFunction } from 'ajv';
+import Ajv, { _, ValidateFunction } from 'ajv/dist/2020';
 import names from 'ajv/dist/compile/names';
 import addFormats from 'ajv-formats';
 import addErrors from 'ajv-errors';