diff --git a/src/auth/authentication.js b/src/auth/authentication.js
index d0a1985..d65e9c6 100644
--- a/src/auth/authentication.js
+++ b/src/auth/authentication.js
@@ -20,7 +20,7 @@ module.exports = (users) => {
       
         const credentialSchema = joi.object({
             email: joi.string().email().required(),
-            password: joi.string().max(20).required(),
+            password: joi.string().alphanum().max(20).required(),
         });
 
         const valid = credentialSchema.validate(req.body);
@@ -56,9 +56,9 @@ module.exports = (users) => {
     router.post("/signup", async (req, res) => {
         const userSchema = joi.object({
             email: joi.string().email().required(),
-            name: joi.string().alphanum().max(20).required(),
-            password: joi.string().max(20).min(8).required(),
-            repassword: joi.string().max(20).min(8).required(),
+            name: joi.string().pattern(new RegExp('^[a-zA-Z]+$')).max(20).required(),
+            password: joi.string().alphanum().max(20).min(8).required(),
+            repassword: joi.string().alphanum().max(20).min(8).required(),
         });
 
         const valid = userSchema.validate(req.body);
diff --git a/src/router/user.js b/src/router/user.js
index c8f67f6..9286457 100644
--- a/src/router/user.js
+++ b/src/router/user.js
@@ -311,9 +311,9 @@ module.exports = (middleware, users, plans, assets) => {
     router.post("/updateAccount", async (req, res) => {
         const accountSchema = joi.object({
             email: joi.string().email(),
-            name: joi.string().alphanum().max(20),
-            password: joi.string().max(20).min(8),
-            repassword: joi.string().max(20).min(8),
+            name: joi.string().pattern(new RegExp('^[a-zA-Z]+$')).max(20),
+            password: joi.string().alphanum().max(20).min(8),
+            repassword: joi.string().alphanum().max(20).min(8),
         });
 
         const valid = accountSchema.validate(req.body);
diff --git a/src/views/profile.ejs b/src/views/profile.ejs
index b8a8c3d..8d6e3b5 100644
--- a/src/views/profile.ejs
+++ b/src/views/profile.ejs
@@ -56,7 +56,7 @@
         <form action="/updateAccount" method="post" class="space-y-4 mt-4" id="account-form">
  
             <label for="email" class="block text-sm font-medium text-gray-700">Email</label>
-            <input id="email" disabled type="text" name="email" value="<%= user.email %>" class="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm disabled:border-gray-200 disabled:bg-gray-50 disabled:text-gray-500 disabled:shadow-none">
+            <input id="email" disabled type="email" name="email" value="<%= user.email %>" class="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm disabled:border-gray-200 disabled:bg-gray-50 disabled:text-gray-500 disabled:shadow-none">
 
             <label for="name" class="block text-sm font-medium text-gray-700">Name</label>
             <input id="name" disabled type="text" name="name" value="<%= user.name %>" class="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm disabled:border-gray-200 disabled:bg-gray-50 disabled:text-gray-500 disabled:shadow-none">