diff --git a/lib/interpolateName.js b/lib/interpolateName.js
index 6a13a36..0cd3932 100644
--- a/lib/interpolateName.js
+++ b/lib/interpolateName.js
@@ -108,7 +108,7 @@ function interpolateName(loaderContext, name, options) {
       // `hash` and `contenthash` are same in `loader-utils` context
       // let's keep `hash` for backward compatibility
       .replace(
-        /\[(?:([^:\]]+):)?(?:hash|contenthash)(?::([a-z]+\d*))?(?::(\d+))?\]/gi,
+        /\[(?:([^[:\]]+):)?(?:hash|contenthash)(?::([a-z]+\d*))?(?::(\d+))?\]/gi,
         (all, hashType, digestType, maxLength) =>
           getHashDigest(content, hashType, digestType, parseInt(maxLength, 10))
       )