diff --git a/CHANGELOG.md b/CHANGELOG.md
index 67778885..fd0997e7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- Denmark (DNK) postal code rules.
+
 ## [3.37.2] - 2024-10-02
 
 ### Added
diff --git a/react/country/DNK.ts b/react/country/DNK.ts
index 2b2a9bc5..381bffe6 100644
--- a/react/country/DNK.ts
+++ b/react/country/DNK.ts
@@ -15,8 +15,10 @@ const rules: PostalCodeRules = {
     },
     {
       name: 'postalCode',
-      maxLength: 50,
-      label: 'postalCode',
+      maxLength: 4,
+      label: 'Postnumre',
+      mask: '1234',
+      regex: '^\\d{4}$',
       size: 'small',
       autoComplete: 'nope',
       postalCodeAPI: false,