diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87d865f6..e94934e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+- implemented autoUpperCase rule for countries with alphanumeric postal codes, ensuring consistent uppercase formatting.
+
 ## [4.24.5] - 2024-07-05
 
 ### Fixed
diff --git a/react/country/GBR.js b/react/country/GBR.js
index bfc15064..9923fc3f 100644
--- a/react/country/GBR.js
+++ b/react/country/GBR.js
@@ -22,6 +22,7 @@ export default {
       postalCodeAPI: false,
       size: 'small',
       autoComplete: 'nope',
+      autoUpperCase: true,
     },
     {
       name: 'street',
diff --git a/react/country/GIB.js b/react/country/GIB.js
new file mode 100644
index 00000000..c027ddc4
--- /dev/null
+++ b/react/country/GIB.js
@@ -0,0 +1,156 @@
+import { POSTAL_CODE } from '../constants'
+
+export default {
+  country: null,
+  abbr: null,
+  postalCodeFrom: POSTAL_CODE,
+  fields: [
+    {
+      hidden: true,
+      name: 'country',
+      maxLength: 100,
+      label: 'country',
+      size: 'medium',
+    },
+    {
+      name: 'postalCode',
+      maxLength: 50,
+      label: 'postalCode',
+      size: 'small',
+      autoComplete: 'nope',
+      postalCodeAPI: false,
+      autoUpperCase: true,
+    },
+    {
+      name: 'street',
+      label: 'addressLine1',
+      required: true,
+      size: 'xlarge',
+    },
+    {
+      hidden: true,
+      name: 'number',
+      maxLength: 750,
+      label: 'number',
+      size: 'small',
+      autoComplete: 'nope',
+    },
+    {
+      name: 'complement',
+      maxLength: 750,
+      label: 'addressLine2',
+      size: 'xlarge',
+    },
+    {
+      hidden: true,
+      name: 'reference',
+      maxLength: 750,
+      label: 'reference',
+      size: 'xlarge',
+    },
+    {
+      hidden: true,
+      name: 'neighborhood',
+      maxLength: 100,
+      label: 'neighborhood',
+      size: 'large',
+    },
+    {
+      name: 'city',
+      maxLength: 100,
+      label: 'city',
+      required: true,
+      size: 'large',
+    },
+    {
+      name: 'state',
+      maxLength: 100,
+      label: 'state',
+      required: true,
+      size: 'large',
+    },
+    {
+      name: 'receiverName',
+      elementName: 'receiver',
+      maxLength: 750,
+      label: 'receiverName',
+      size: 'xlarge',
+      required: true,
+    },
+  ],
+  geolocation: {
+    postalCode: {
+      valueIn: 'long_name',
+      types: ['postal_code'],
+      required: false,
+    },
+
+    number: {
+      valueIn: 'long_name',
+      types: ['street_number'],
+      required: false,
+      notApplicable: true,
+    },
+
+    street: { valueIn: 'long_name', types: ['route'] },
+
+    neighborhood: {
+      valueIn: 'long_name',
+      types: [
+        'neighborhood',
+        'sublocality_level_1',
+        'sublocality_level_2',
+        'sublocality_level_3',
+        'sublocality_level_4',
+        'sublocality_level_5',
+      ],
+    },
+
+    state: {
+      valueIn: 'long_name',
+      types: ['administrative_area_level_1'],
+    },
+
+    city: {
+      valueIn: 'long_name',
+      types: ['administrative_area_level_2', 'locality'],
+    },
+
+    receiverName: {
+      required: true,
+    },
+  },
+  summary: [
+    [
+      {
+        name: 'street',
+      },
+      {
+        delimiter: ' ',
+        name: 'number',
+      },
+      {
+        delimiter: ', ',
+        name: 'complement',
+      },
+    ],
+    [
+      {
+        name: 'neighborhood',
+        delimiterAfter: ' - ',
+      },
+      {
+        name: 'city',
+      },
+      {
+        delimiter: ' - ',
+        name: 'state',
+      },
+    ],
+    [
+      {
+        name: 'postalCode',
+      },
+    ],
+  ],
+}
diff --git a/react/country/IRL.js b/react/country/IRL.js
index 0cec0c0c..68ebb7f6 100644
--- a/react/country/IRL.js
+++ b/react/country/IRL.js
@@ -23,6 +23,7 @@ export default {
       postalCodeAPI: true,
       size: 'small',
       autoComplete: 'nope',
+      autoUpperCase: true,
     },
     {
       name: 'street',
diff --git a/react/country/LTU.js b/react/country/LTU.js
new file mode 100644
index 00000000..c027ddc4
--- /dev/null
+++ b/react/country/LTU.js
@@ -0,0 +1,156 @@
+import { POSTAL_CODE } from '../constants'
+
+export default {
+  country: null,
+  abbr: null,
+  postalCodeFrom: POSTAL_CODE,
+  fields: [
+    {
+      hidden: true,
+      name: 'country',
+      maxLength: 100,
+      label: 'country',
+      size: 'medium',
+    },
+    {
+      name: 'postalCode',
+      maxLength: 50,
+      label: 'postalCode',
+      size: 'small',
+      autoComplete: 'nope',
+      postalCodeAPI: false,
+      autoUpperCase: true,
+    },
+    {
+      name: 'street',
+      label: 'addressLine1',
+      required: true,
+      size: 'xlarge',
+    },
+    {
+      hidden: true,
+      name: 'number',
+      maxLength: 750,
+      label: 'number',
+      size: 'small',
+      autoComplete: 'nope',
+    },
+    {
+      name: 'complement',
+      maxLength: 750,
+      label: 'addressLine2',
+      size: 'xlarge',
+    },
+    {
+      hidden: true,
+      name: 'reference',
+      maxLength: 750,
+      label: 'reference',
+      size: 'xlarge',
+    },
+    {
+      hidden: true,
+      name: 'neighborhood',
+      maxLength: 100,
+      label: 'neighborhood',
+      size: 'large',
+    },
+    {
+      name: 'city',
+      maxLength: 100,
+      label: 'city',
+      required: true,
+      size: 'large',
+    },
+    {
+      name: 'state',
+      maxLength: 100,
+      label: 'state',
+      required: true,
+      size: 'large',
+    },
+    {
+      name: 'receiverName',
+      elementName: 'receiver',
+      maxLength: 750,
+      label: 'receiverName',
+      size: 'xlarge',
+      required: true,
+    },
+  ],
+  geolocation: {
+    postalCode: {
+      valueIn: 'long_name',
+      types: ['postal_code'],
+      required: false,
+    },
+
+    number: {
+      valueIn: 'long_name',
+      types: ['street_number'],
+      required: false,
+      notApplicable: true,
+    },
+
+    street: { valueIn: 'long_name', types: ['route'] },
+
+    neighborhood: {
+      valueIn: 'long_name',
+      types: [
+        'neighborhood',
+        'sublocality_level_1',
+        'sublocality_level_2',
+        'sublocality_level_3',
+        'sublocality_level_4',
+        'sublocality_level_5',
+      ],
+    },
+
+    state: {
+      valueIn: 'long_name',
+      types: ['administrative_area_level_1'],
+    },
+
+    city: {
+      valueIn: 'long_name',
+      types: ['administrative_area_level_2', 'locality'],
+    },
+
+    receiverName: {
+      required: true,
+    },
+  },
+  summary: [
+    [
+      {
+        name: 'street',
+      },
+      {
+        delimiter: ' ',
+        name: 'number',
+      },
+      {
+        delimiter: ', ',
+        name: 'complement',
+      },
+    ],
+    [
+      {
+        name: 'neighborhood',
+        delimiterAfter: ' - ',
+      },
+      {
+        name: 'city',
+      },
+      {
+        delimiter: ' - ',
+        name: 'state',
+      },
+    ],
+    [
+      {
+        name: 'postalCode',
+      },
+    ],
+  ],
+}
diff --git a/react/country/MLT.js b/react/country/MLT.js
index 4aa0d352..25e34b43 100644
--- a/react/country/MLT.js
+++ b/react/country/MLT.js
@@ -22,6 +22,7 @@ export default {
       postalCodeAPI: false,
       size: 'small',
       autoComplete: 'nope',
+      autoUpperCase: true,
     },
     {
       name: 'street',
@@ -139,8 +140,8 @@ export default {
         'Żebbuġ (Zebbug)',
         'Zebbug (Zebbug-Gozo)',
         'Zejtun (Zejtun)',
-        'Zurrieq (Zurrieq)'
-        ],
+        'Zurrieq (Zurrieq)',
+      ],
     },
     {
       name: 'receiverName',
diff --git a/react/country/NLD.js b/react/country/NLD.js
index 55cb13e0..1624aa12 100644
--- a/react/country/NLD.js
+++ b/react/country/NLD.js
@@ -22,6 +22,7 @@ export default {
       postalCodeAPI: false,
       size: 'small',
       autoComplete: 'nope',
+      autoUpperCase: true,
     },
     {
       name: 'street',
diff --git a/react/inputs/StyleguideInput/index.js b/react/inputs/StyleguideInput/index.js
index 1d370f7f..fca9d470 100644
--- a/react/inputs/StyleguideInput/index.js
+++ b/react/inputs/StyleguideInput/index.js
@@ -27,8 +27,15 @@ class StyleguideInput extends Component {
   }
 
   handleChange = (e) => {
+    const { field } = this.props
+    let { value } = e.target
+
+    if (field.autoUpperCase === true) {
+      value = value.toUpperCase()
+    }
+
     this.setState({ showErrorMessage: false })
-    this.props.onChange && this.props.onChange(e.target.value)
+    this.props.onChange && this.props.onChange(value)
   }
 
   componentDidUpdate(prevProps) {