diff --git a/CHANGELOG.md b/CHANGELOG.md
index 159e3a37..313c6a9a 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
+
+- Belgium ('BEL') country rules.
+
 ## [3.34.11] - 2023-10-18
 
 ### Fixed
diff --git a/react/country/BEL.ts b/react/country/BEL.ts
index 088fb5bc..868b2d7e 100644
--- a/react/country/BEL.ts
+++ b/react/country/BEL.ts
@@ -30,6 +30,13 @@ const rules: PostalCodeRules = {
       required: true,
       size: 'xlarge',
     },
+    {
+      name: 'number',
+      maxLength: 750,
+      label: 'number',
+      required: false,
+      size: 'mini',
+    },
     {
       name: 'complement',
       maxLength: 750,
@@ -41,13 +48,14 @@ const rules: PostalCodeRules = {
       maxLength: 100,
       label: 'city',
       required: true,
-      size: 'large',
+      size: 'xlarge',
     },
     {
+      hidden: true,
       name: 'state',
       maxLength: 100,
       label: 'department',
-      required: true,
+      required: false,
       size: 'large',
     },
     {