diff --git a/ChangeLog b/ChangeLog
index a6c721f..5378f51 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+2026-03-25  Pablo
+        * Added AL, ME, MK, MD, RS, GG, JE, IM, XK to SEPA countries
+
 2024-04-13  Saša Jovanić <sasa@simplify.ba>
         * Upgraded several npm packages
         * Moved to new ts compiler targets
diff --git a/src/ibantools.ts b/src/ibantools.ts
index 6b964fb..e83cde7 100755
--- a/src/ibantools.ts
+++ b/src/ibantools.ts
@@ -940,6 +940,7 @@ export const countrySpecs: CountryMapInternal = {
     chars: 28,
     bban_regexp: '^[0-9]{8}[A-Z0-9]{16}$',
     IBANRegistry: true,
+    SEPA: true,
     branch_indentifier: '3-7',
     bank_identifier: '0-2',
     account_indentifier: '12-28',
@@ -1225,7 +1226,7 @@ export const countrySpecs: CountryMapInternal = {
     bban_regexp: '^[0-9]{10}[A-Z0-9]{11}[0-9]{2}$',
     IBANRegistry: true,
   },
-  GG: {},
+  GG: { SEPA: true },
   GH: {},
   GI: {
     chars: 23,
@@ -1316,7 +1317,7 @@ export const countrySpecs: CountryMapInternal = {
     branch_indentifier: '3-5',
     bank_identifier: '0-2',
   },
-  IM: {},
+  IM: { SEPA: true },
   IN: {},
   IO: {},
   IQ: {
@@ -1348,7 +1349,7 @@ export const countrySpecs: CountryMapInternal = {
     bank_identifier: '1-5',
     account_indentifier: '4-27',
   },
-  JE: {},
+  JE: { SEPA: true },
   JM: {},
   JO: {
     chars: 30,
@@ -1450,6 +1451,7 @@ export const countrySpecs: CountryMapInternal = {
     chars: 24,
     bban_regexp: '^[A-Z0-9]{2}[A-Z0-9]{18}$',
     IBANRegistry: true,
+    SEPA: true,
     bank_identifier: '0-1',
     account_indentifier: '6-24',
   },
@@ -1458,6 +1460,7 @@ export const countrySpecs: CountryMapInternal = {
     bban_regexp: '^[0-9]{18}$',
     bban_validation_func: checkMod9710BBAN,
     IBANRegistry: true,
+    SEPA: true,
     bank_identifier: '0-2',
     account_indentifier: '4-22',
   },
@@ -1476,6 +1479,7 @@ export const countrySpecs: CountryMapInternal = {
     bban_regexp: '^[0-9]{3}[A-Z0-9]{10}[0-9]{2}$',
     bban_validation_func: checkMod9710BBAN,
     IBANRegistry: true,
+    SEPA: true,
     bank_identifier: '0-2',
   },
   ML: {
@@ -1651,6 +1655,7 @@ export const countrySpecs: CountryMapInternal = {
     bban_regexp: '^[0-9]{18}$',
     bban_validation_func: checkMod9710BBAN,
     IBANRegistry: true,
+    SEPA: true,
     bank_identifier: '0-2',
   },
   RU: {
@@ -1822,6 +1827,7 @@ export const countrySpecs: CountryMapInternal = {
     chars: 20,
     bban_regexp: '^[0-9]{16}$',
     IBANRegistry: true,
+    SEPA: true,
     branch_indentifier: '2-3',
     account_indentifier: '4-20',
   },
diff --git a/test/ibantools_test.js b/test/ibantools_test.js
index d03d095..2f1cf8f 100644
--- a/test/ibantools_test.js
+++ b/test/ibantools_test.js
@@ -549,6 +549,11 @@ describe('IBANTools', function() {
     it('with non valid country code XX return false', function() {
       expect(iban.isSEPACountry('XX')).to.be.false;
     });
+    ['AL', 'ME', 'MK', 'MD', 'RS', 'GG', 'JE', 'IM', 'XK'].forEach(country => {
+      it(`with valid country code ${country} should return true`, function() {
+        expect(iban.isSEPACountry(country)).to.be.true;
+      });
+    });
   });
 
   describe('When calling extractBIC() with valid BIC ABNANL2A', function() {