diff --git a/CollabVMAuthServer/Database.cs b/CollabVMAuthServer/Database.cs
index 6d14d34..4b76a65 100644
--- a/CollabVMAuthServer/Database.cs
+++ b/CollabVMAuthServer/Database.cs
@@ -30,6 +30,7 @@ public class Database
                               username VARCHAR(20) NOT NULL UNIQUE KEY,
                               password TEXT NOT NULL,
                               email TEXT NOT NULL UNIQUE KEY,
+                              date_of_birth DATE NOT NULL,
                               email_verified BOOLEAN NOT NULL DEFAULT 0,
                               email_verification_code CHAR(8) DEFAULT NULL,
                               cvm_rank INT UNSIGNED NOT NULL DEFAULT 1,
@@ -77,6 +78,7 @@ public class Database
             Username = reader.GetString("username"),
             Password = reader.GetString("password"),
             Email = reader.GetString("email"),
+            DateOfBirth = reader.GetDateOnly("date_of_birth"),
             EmailVerified = reader.GetBoolean("email_verified"),
             EmailVerificationCode = reader.GetString("email_verification_code"),
             Rank = (Rank)reader.GetUInt32("cvm_rank"),
@@ -85,7 +87,7 @@ public class Database
         };
     }
 
-    public async Task RegisterAccount(string username, string email, string password, bool verified, IPAddress ip,
+    public async Task RegisterAccount(string username, string email, DateOnly dateOfBirth, string password, bool verified, IPAddress ip,
         string? verificationcode = null)
     {
         await using var db = new MySqlConnection(connectionString);
@@ -93,13 +95,14 @@ public class Database
         await using var cmd = db.CreateCommand();
         cmd.CommandText = """
                           INSERT INTO users
-                            (username, password, email, email_verified, email_verification_code, registration_ip)
+                            (username, password, email, date_of_birth, email_verified, email_verification_code, registration_ip)
                             VALUES
-                            (@username, @password, @email, @email_verified, @email_verification_code, @registration_ip)
+                            (@username, @password, @email @date_of_birth, @email_verified, @email_verification_code, @registration_ip)
                           """;
         cmd.Parameters.AddWithValue("@username", username);
         cmd.Parameters.AddWithValue("@password", Argon2.Hash(password));
         cmd.Parameters.AddWithValue("@email", email);
+        cmd.Parameters.AddWithValue("@date_of_birth", dateOfBirth);
         cmd.Parameters.AddWithValue("@email_verified", verified);
         cmd.Parameters.AddWithValue("@email_verification_code", verificationcode);
         cmd.Parameters.AddWithValue("@registration_ip", ip.GetAddressBytes());
diff --git a/CollabVMAuthServer/HTTP/Payloads/RegisterPayload.cs b/CollabVMAuthServer/HTTP/Payloads/RegisterPayload.cs
index e24f0df..6666b03 100644
--- a/CollabVMAuthServer/HTTP/Payloads/RegisterPayload.cs
+++ b/CollabVMAuthServer/HTTP/Payloads/RegisterPayload.cs
@@ -6,4 +6,5 @@ public class RegisterPayload
     public string password { get; set; }
     public string email { get; set; }
     public string? captchaToken { get; set; }
+    public string dateOfBirth { get; set; }
 }
\ No newline at end of file
diff --git a/CollabVMAuthServer/Routes.cs b/CollabVMAuthServer/Routes.cs
index 5e158a1..0005d2a 100644
--- a/CollabVMAuthServer/Routes.cs
+++ b/CollabVMAuthServer/Routes.cs
@@ -1,5 +1,6 @@
 using System.ComponentModel.DataAnnotations;
 using System.Net;
+using System.Runtime.InteropServices.JavaScript;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using Computernewb.CollabVMAuthServer.HTTP.Payloads;
@@ -524,7 +525,7 @@ public static class Routes
             }, Utilities.JsonSerializerOptions);
         }
         var payload = await context.Request.ReadFromJsonAsync<RegisterPayload>();
-        if (payload == null || string.IsNullOrWhiteSpace(payload.username) || string.IsNullOrWhiteSpace(payload.password) || string.IsNullOrWhiteSpace(payload.email))
+        if (payload == null || string.IsNullOrWhiteSpace(payload.username) || string.IsNullOrWhiteSpace(payload.password) || string.IsNullOrWhiteSpace(payload.email) || string.IsNullOrWhiteSpace(payload.dateOfBirth))
         {
             context.Response.StatusCode = 400;
             return Results.Json(new RegisterResponse
@@ -628,11 +629,31 @@ public static class Routes
                 error = "That password is commonly used and is not allowed."
             }, Utilities.JsonSerializerOptions);
         }
+        // Validate date of birth
+        if (!DateOnly.TryParseExact(payload.dateOfBirth, "yyyy-MM-dd", out var dob))
+        {
+            context.Response.StatusCode = 400;
+            return Results.Json(new RegisterResponse
+            {
+                success = false,
+                error = "Invalid date of birth"
+            }, Utilities.JsonSerializerOptions);
+        }
+
+        if (dob.AddYears(13) > DateOnly.FromDateTime(DateTime.Now))
+        {
+            context.Response.StatusCode = 400;
+            return Results.Json(new RegisterResponse
+            {
+                success = false,
+                error = "You must be at least 13 years old to register."
+            }, Utilities.JsonSerializerOptions);
+        }
         // Create the account
         if (Program.Config.Registration.EmailVerificationRequired)
         {
             var code = Program.Random.Next(10000000, 99999999).ToString();
-            await Program.Database.RegisterAccount(payload.username, payload.email, payload.password, false, ip,code);
+            await Program.Database.RegisterAccount(payload.username, payload.email, dob, payload.password, false, ip,code);
             await Program.Mailer.SendVerificationCode(payload.username, payload.email, code);
             return Results.Json(new RegisterResponse
             {
@@ -644,7 +665,7 @@ public static class Routes
         }
         else
         {
-            await Program.Database.RegisterAccount(payload.username, payload.email, payload.password, true, null);
+            await Program.Database.RegisterAccount(payload.username, payload.email, dob, payload.password, true, null);
             var token = Utilities.RandomString(32);
             await Program.Database.CreateSession(user.Username, token, ip);
             return Results.Json(new RegisterResponse
diff --git a/CollabVMAuthServer/User.cs b/CollabVMAuthServer/User.cs
index e21bb89..72d0e5b 100644
--- a/CollabVMAuthServer/User.cs
+++ b/CollabVMAuthServer/User.cs
@@ -8,6 +8,7 @@ public class User
     public string Username { get; set; }
     public string Password { get; set; }
     public string Email { get; set; }
+    public DateOnly DateOfBirth { get; set; }
     public bool EmailVerified { get; set; }
     public string EmailVerificationCode { get; set; }
     public Rank Rank { get; set; }