diff --git a/package.json b/package.json
index b77b4d9..953ad4c 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "@hcaptcha/types": "^1.0.3",
     "@popperjs/core": "^2.11.8",
     "bootstrap": "^5.3.2",
+    "dayjs": "^1.11.10",
     "nanoevents": "^7.0.1",
     "simple-keyboard": "^3.7.53"
   },
diff --git a/src/html/index.html b/src/html/index.html
index 4317469..1398fd5 100644
--- a/src/html/index.html
+++ b/src/html/index.html
@@ -129,6 +129,8 @@
                             <input id="accountRegisterPassword" type="password" class="form-control bg-dark text-light" placeholder="Password" name="password" required><br>
                             <label for="accountRegisterConfirmPassword">Confirm Password</label><br/>
                             <input id="accountRegisterConfirmPassword" type="password" class="form-control bg-dark text-light" placeholder="Confirm Password" name="confirmpassword" required><br>
+                            <label for="accountRegisterDateOfBirth">Date of Birth</label><br/>
+                            <input id="accountRegisterDateOfBirth" type="date" class="form-control bg-dark text-light" name="dateofbirth" required><br/>
                             <div id="accountRegisterCaptcha"></div>
                             <button type="submit" class="btn btn-primary">Register</button>
                         </form>
diff --git a/src/ts/AuthManager.ts b/src/ts/AuthManager.ts
index 888da39..89c23fc 100644
--- a/src/ts/AuthManager.ts
+++ b/src/ts/AuthManager.ts
@@ -1,3 +1,5 @@
+import * as dayjs from 'dayjs';
+
 export default class AuthManager {
     apiEndpoint : string;
     info : AuthServerInformation | null;
@@ -67,7 +69,7 @@ export default class AuthManager {
         })
     }
 
-    register(username : string, password : string, email : string, captchaToken : string | undefined) : Promise<AccountRegisterResult> {
+    register(username : string, password : string, email : string, dateOfBirth : dayjs.Dayjs, captchaToken : string | undefined) : Promise<AccountRegisterResult> {
         return new Promise(async (res, rej) => {
             if (!this.info) throw new Error("Cannot login before fetching API information.");
             if (!captchaToken && this.info.hcaptcha.required) throw new Error("This API requires a valid hCaptcha token.");
@@ -80,6 +82,7 @@ export default class AuthManager {
                     username: username,
                     password: password,
                     email: email,
+                    dateOfBirth: dateOfBirth.format("YYYY-MM-DD"),
                     captchatoken: captchaToken
                 })
             });
diff --git a/src/ts/main.ts b/src/ts/main.ts
index ebf1148..b972b6d 100644
--- a/src/ts/main.ts
+++ b/src/ts/main.ts
@@ -14,6 +14,7 @@ import { Unsubscribe } from 'nanoevents';
 import { I18nStringKey, TheI18n } from './i18n.js';
 import { Format } from './format.js';
 import AuthManager from './AuthManager.js';
+import dayjs from 'dayjs';
 
 // Elements
 const w = window as any;
@@ -95,6 +96,7 @@ const elements = {
 	accountRegisterUsername: document.getElementById("accountRegisterUsername") as HTMLInputElement,
 	accountRegisterPassword: document.getElementById("accountRegisterPassword") as HTMLInputElement,
 	accountRegisterConfirmPassword: document.getElementById("accountRegisterConfirmPassword") as HTMLInputElement,
+	accountRegisterDateOfBirth: document.getElementById("accountRegisterDateOfBirth") as HTMLInputElement,
 	accountVerifyEmailCode: document.getElementById("accountVerifyEmailCode") as HTMLInputElement,
 	accountVerifyEmailPassword: document.getElementById("accountVerifyEmailPassword") as HTMLInputElement,
 
@@ -993,18 +995,20 @@ elements.accountRegisterForm.addEventListener('submit', async (e) => {
 	var username = elements.accountRegisterUsername.value;
 	var password = elements.accountRegisterPassword.value;
 	var email = elements.accountRegisterEmail.value;
+	var dob = dayjs(elements.accountRegisterDateOfBirth.valueAsDate);
 	if (password !== elements.accountRegisterConfirmPassword.value) {
 		elements.accountModalErrorText.innerHTML = TheI18n.GetString(I18nStringKey.kPasswordsMustMatch);
 		elements.accountModalError.style.display = "block";
 		return false;
 	}
-	var result = await auth!.register(username, password, email, hcaptchaToken);
+	var result = await auth!.register(username, password, email, dob, hcaptchaToken);
 	if (auth!.info!.hcaptcha.required) hcaptcha.reset(hcaptchaID);
 	if (result.success) {
 		elements.accountRegisterUsername.value = "";
 		elements.accountRegisterEmail.value = "";
 		elements.accountRegisterPassword.value = "";
 		elements.accountRegisterConfirmPassword.value = "";
+		elements.accountRegisterDateOfBirth.value = "";
 		if (result.verificationRequired) {
 			accountBeingVerified = result.username;
 			elements.accountVerifyEmailText.innerText = TheI18n.GetString(I18nStringKey.kAccountModal_VerifyText, result.email!);