diff --git a/package.json b/package.json
index c1d3632..79a86bf 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
     "eslint-plugin-n": "^16.0.0",
     "eslint-plugin-node-dependencies": "^0.11.0",
     "eslint-plugin-prettier": "^5.0.0",
-    "eslint-plugin-regexp": "^1.0.0",
+    "eslint-plugin-regexp": "^2.0.0",
     "eslint-plugin-vue": "^9.0.0",
     "mocha": "^10.0.0",
     "nyc": "^15.1.0",
diff --git a/src/parser/validate.ts b/src/parser/validate.ts
index 6daf9b8..e2277b9 100644
--- a/src/parser/validate.ts
+++ b/src/parser/validate.ts
@@ -26,9 +26,9 @@ import type { JSONIdentifier } from "./ast";
 import type { JSONSyntaxContext } from "./syntax-context";
 
 const lineBreakPattern = /\r\n|[\n\r\u2028\u2029]/u;
-const octalNumericLiteralPattern = /^0[Oo]/u;
+const octalNumericLiteralPattern = /^0o/iu;
 const legacyOctalNumericLiteralPattern = /^0\d/u;
-const binaryNumericLiteralPattern = /^0[Bb]/u;
+const binaryNumericLiteralPattern = /^0b/iu;
 
 const unicodeCodepointEscapePattern = /\\u\{[\dA-Fa-f]+\}/uy;