diff --git a/ui/cypress/e2e/admin.cy.js b/ui/cypress/e2e/admin.cy.js
index bfb1e88..e4f4a46 100644
--- a/ui/cypress/e2e/admin.cy.js
+++ b/ui/cypress/e2e/admin.cy.js
@@ -27,7 +27,7 @@ describe('admin', () => {
     cy.get('#email').clear('te');
     cy.get('#email').type('test@test.nl');
     cy.get('#password').clear();
-    cy.get('#password').type('Testing1');
+    cy.get('#password').type('Testing1!');
     cy.get('.modal-action > .btn').click();
 
     cy.wait(100);
@@ -42,7 +42,7 @@ describe('admin', () => {
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input').click();
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').type('test@test.nl');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').clear();
-    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1');
+    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1!');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > .modal-action > .btn').click();
 
     cy.wait(50);
@@ -64,7 +64,7 @@ describe('admin', () => {
     cy.get('#email').clear('ad');
     cy.get('#email').type('admin2@test.nl');
     cy.get('#password').clear();
-    cy.get('#password').type('Testing1');
+    cy.get('#password').type('Testing1@');
     cy.get('.checkbox').check();
     cy.get('.modal-action > .btn').click();
     cy.get('.text').click();
@@ -72,7 +72,7 @@ describe('admin', () => {
     cy.get('.hidden > :nth-child(1)').click();
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').type('admin2@test.nl');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').clear();
-    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1');
+    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1@');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > .modal-action > .btn').click();
     cy.get('.text').click();
     cy.get(':nth-child(2) > .btn > .fa-solid').click();
@@ -94,7 +94,7 @@ describe('admin', () => {
     cy.get('#email').clear('te');
     cy.get('#email').type('test@test.nl');
     cy.get('#password').clear();
-    cy.get('#password').type('Testing1');
+    cy.get('#password').type('Testing1!');
     cy.get('.modal-action > .btn').click();
     cy.get('.text').click();
     cy.get('.menu > :nth-child(3) > .btn').click();
@@ -102,7 +102,7 @@ describe('admin', () => {
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').clear('te');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').type('test@test.nl');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').clear();
-    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1');
+    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1!');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > .modal-action > .btn').click();
     cy.get('.text').click();
     cy.get('[open=""] > .menu > :nth-child(2) > .btn').click();
@@ -122,7 +122,7 @@ describe('admin', () => {
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').clear('te');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').type('test@test.nl');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').clear();
-    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1');
+    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1!');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > .modal-action > .btn').click();
 
     cy.get('.alert span').should('contain.text', 'Could not login with the given email and password');
diff --git a/ui/cypress/e2e/authentication.cy.js b/ui/cypress/e2e/authentication.cy.js
index 1c629b8..c894020 100644
--- a/ui/cypress/e2e/authentication.cy.js
+++ b/ui/cypress/e2e/authentication.cy.js
@@ -23,9 +23,9 @@ describe('authentication', () => {
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').clear('b');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').type('test@test.nl');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').clear();
-    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1');
+    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1!');
     cy.get('#checkPassword').clear();
-    cy.get('#checkPassword').type('Testing1');
+    cy.get('#checkPassword').type('Testing1!');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > .modal-action > .btn').click();
 
     cy.url().should('include', '/home')
@@ -76,9 +76,9 @@ describe('authentication', () => {
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').clear('ad');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').type('admin@test.nl');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').clear();
-    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1');
+    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1!');
     cy.get('#checkPassword').clear();
-    cy.get('#checkPassword').type('Testing1{enter}');
+    cy.get('#checkPassword').type('Testing1!{enter}');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > .modal-action > .btn').click();
 
     cy.get('.alert span').should('contain.text', 'An account with this email already exists');
@@ -102,9 +102,9 @@ describe('authentication', () => {
     cy.get('#currentPassword').clear('ad');
     cy.get('#currentPassword').type('admin');
     cy.get('#newPassword').clear();
-    cy.get('#newPassword').type('Testing1');
+    cy.get('#newPassword').type('Testing1@');
     cy.get('#confirmNewPassword').clear();
-    cy.get('#confirmNewPassword').type('Testing1{enter}');
+    cy.get('#confirmNewPassword').type('Testing1@{enter}');
 
     cy.get('.text').click();
     cy.get('.menu > :nth-child(3) > .btn').click();
@@ -113,7 +113,7 @@ describe('authentication', () => {
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').clear('ad');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').type('admin@test.nl');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').clear();
-    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1');
+    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1@');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > .modal-action > .btn').click();
 
     cy.url().should('include', '/home')
@@ -125,9 +125,9 @@ describe('authentication', () => {
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').clear('te');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').type('test@test.nl');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').clear();
-    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1');
+    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1!');
     cy.get('#checkPassword').clear();
-    cy.get('#checkPassword').type('Testing1');
+    cy.get('#checkPassword').type('Testing1!');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > .modal-action > .btn').click();
 
     cy.url().should('include', '/home')
@@ -140,7 +140,7 @@ describe('authentication', () => {
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').clear('te');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(1) > .input > #email').type('test@test.nl');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').clear();
-    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1{enter}');
+    cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > :nth-child(2) > .input > #password').type('Testing1!{enter}');
     cy.get('.modal-open > .modal-box > form.w-full > .space-y-4 > .modal-action > .btn').click();
 
     cy.get('.alert span').should('contain.text', 'Could not login with the given email and password');
diff --git a/ui/src/components/RegisterModal.tsx b/ui/src/components/RegisterModal.tsx
index 70f770f..1663340 100644
--- a/ui/src/components/RegisterModal.tsx
+++ b/ui/src/components/RegisterModal.tsx
@@ -75,6 +75,7 @@ export function RegisterModal(props: ModalBaseProps): JSXElement {
               pattern(/[A-Z]/, t('your_password_must_have_1_uppercase_letter')),
               pattern(/[a-z]/, t('your_password_must_have_1_lowercase_letter')),
               pattern(/[0-9]/, t('your_password_must_have_1_digit')),
+              pattern(/[\W]/, t('your_password_must_have_1_special_character')),
             ]}
           >
             {(field, props) => (
diff --git a/ui/src/locales/en.ts b/ui/src/locales/en.ts
index 1e89ae6..51b8727 100644
--- a/ui/src/locales/en.ts
+++ b/ui/src/locales/en.ts
@@ -102,6 +102,7 @@ export const dict = {
   your_email_is_not_verified_yet: 'Your email is not verified yet',
   your_password_must_have_1_digit: 'Your password must have 1 digit',
   your_password_must_have_1_lowercase_letter: 'Your password must have 1 lowercase letter',
+  your_password_must_have_1_special_character: 'Your password must have 1 special character',
   your_password_must_have_1_uppercase_letter: 'Your password must have 1 uppercase letter',
   your_password_must_have_8_characters_or_more: 'Your password must have 8 characters or more',
 };
diff --git a/ui/src/locales/nl.ts b/ui/src/locales/nl.ts
index 07391ff..de4ac00 100644
--- a/ui/src/locales/nl.ts
+++ b/ui/src/locales/nl.ts
@@ -107,6 +107,7 @@ export const dict: Translations = {
   your_email_is_not_verified_yet: 'Je e-mail is nog niet geverifieerd',
   your_password_must_have_1_digit: 'Je wachtwoord moet 1 cijfer bevatten',
   your_password_must_have_1_lowercase_letter: 'Je wachtwoord moet 1 kleine letter bevatten',
+  your_password_must_have_1_special_character: 'Je wachtwoord moet 1 speciaal teken bevatten',
   your_password_must_have_1_uppercase_letter: 'Je wachtwoord moet 1 hoofdletter bevatten',
   your_password_must_have_8_characters_or_more: 'Je wachtwoord moet 8 tekens of meer bevatten',
 };
diff --git a/ui/src/pages/admin_page/UsersAdmin.tsx b/ui/src/pages/admin_page/UsersAdmin.tsx
index 96da364..e3ebbbc 100644
--- a/ui/src/pages/admin_page/UsersAdmin.tsx
+++ b/ui/src/pages/admin_page/UsersAdmin.tsx
@@ -283,6 +283,7 @@ function CreateUserModal(props: CreateUserModalProps): JSXElement {
               pattern(/[A-Z]/, t('your_password_must_have_1_uppercase_letter')),
               pattern(/[a-z]/, t('your_password_must_have_1_lowercase_letter')),
               pattern(/[0-9]/, t('your_password_must_have_1_digit')),
+              pattern(/[\W]/, t('your_password_must_have_1_special_character')),
             ]}
           >
             {(field, props) => (
diff --git a/ui/src/pages/user_account_page/modals/ChangePassword.tsx b/ui/src/pages/user_account_page/modals/ChangePassword.tsx
index 8bf2f11..fecf38e 100644
--- a/ui/src/pages/user_account_page/modals/ChangePassword.tsx
+++ b/ui/src/pages/user_account_page/modals/ChangePassword.tsx
@@ -68,6 +68,7 @@ export function ChangePasswordModal(props: ModalBaseProps): JSXElement {
             pattern(/[A-Z]/, t('your_password_must_have_1_uppercase_letter')),
             pattern(/[a-z]/, t('your_password_must_have_1_lowercase_letter')),
             pattern(/[0-9]/, t('your_password_must_have_1_digit')),
+            pattern(/[\W]/, t('your_password_must_have_1_special_character')),
           ]}
         >
           {(field, props) => (