diff --git a/config.sh b/config.sh
index 64c4b74..a74e0ca 100644
--- a/config.sh
+++ b/config.sh
@@ -2,3 +2,5 @@ cfg[index]='index.html'
 worker_add updateKeys 5400
 
 cfg[who]='LauDom Enterprises' # who sent this message
+cfg[hcaptcha]=false
+cfg[hcaptcha_secret]=''
diff --git a/front/src/index.ts b/front/src/index.ts
index 1360750..583a3d9 100644
--- a/front/src/index.ts
+++ b/front/src/index.ts
@@ -419,6 +419,7 @@ window.addEventListener("load", () => {
       login: (form.querySelector('input[name="login"]')! as HTMLInputElement).value,
       password: (form.querySelector('input[name="password"]')! as HTMLInputElement).value,
       mail: (form.querySelector('input[name="email"]')! as HTMLInputElement).value,
+      hcaptcha: (form.querySelector('textarea[name="h-captcha-response"]')! as HTMLInputElement).value,
     });
     if (res.status == 200) {
       hideElements([".register-box", ".login-box"]);
diff --git a/webroot/api/register.shs b/webroot/api/register.shs
index 3934b93..2fc1a11 100644
--- a/webroot/api/register.shs
+++ b/webroot/api/register.shs
@@ -3,7 +3,10 @@ source "${cfg[namespace]}/code/common.sh"
 
 if [[ "${post_data[login]}" != '' && "${post_data[password]}" != '' && "${post_data[mail]}" != '' ]]; then
 	mail="$(echo "${post_data[mail]}" | sed -s 's/%40/@/')"
-	if ! check_mail "$mail"; then
+	if [[ "${cfg[hcaptcha]}" == true && $(curl -d "response=${post_data[hcaptcha]}&secret=${cfg[hcaptcha_secret]}" -X POST https://hcaptcha.com/siteverify | jq '.success') != "true" ]]; then
+		status=1
+		reason="hCaptcha: invalid token"
+	elif ! check_mail "$mail"; then
 		status=1
 		reason="This mail address is already in use!"
 	else
@@ -25,4 +28,6 @@ Have a wonderful day!
 	elif [[ $status == 1 && $reason != '' ]]; then
 		jq -n '{status: $ARGS.positional[0], msg: $ARGS.positional[1]}' --args -1 "$reason"
 	fi
+else
+	jq -n '{status: $ARGS.positional[0], msg: $ARGS.positional[1]}' --args -1 "Make sure to fill out the form properly."
 fi
diff --git a/webroot/index.html b/webroot/index.html
index fd6af06..580d4a5 100644
--- a/webroot/index.html
+++ b/webroot/index.html
@@ -33,13 +33,13 @@
           <div class="field">
             <label for="login" class="label">Username</label>
             <div class="control">
-              <input type="text" name="login" class="input" placeholder="dominika">
+              <input type="text" name="login" class="input" placeholder="dominika" required>
             </div>
           </div>
           <div class="field">
             <label for="password" class="label">Password</label>
             <div class="control">
-              <input type="password" name="password" class="input" placeholder="***** ***">
+              <input type="password" name="password" class="input" placeholder="***** ***" required>
             </div>
           </div>
           <div class="control">
@@ -53,29 +53,30 @@
           <div class="field">
             <label for="login" class="label">Username</label>
             <div class="control">
-              <input type="text" name="login" class="input" placeholder="laura">
+              <input type="text" name="login" class="input" placeholder="laura" required>
             </div>
           </div>
           <div class="field">
             <label for="password" class="label">Password</label>
             <div class="control">
-              <input type="password" name="password" class="input" placeholder="***** ***">
+              <input type="password" name="password" class="input" placeholder="***** ***" required>
             </div>
           </div>
           <div class="field">
             <label for="email" class="label">E-mail address</label>
             <div class="control">
-              <input type="email" name="email" class="input" placeholder="@2137.pl">
+              <input type="email" name="email" class="input" placeholder="@2137.pl" required>
             </div>
             <p class="help">For password recovery. Verified on account registration</p>
           </div>
           <div class="field">
             <label for="phone" class="label">Phone number</label>
             <div class="control">
-              <input type="tel" name="phone" class="input" placeholder="222922597">
+              <input type="tel" name="phone" class="input" placeholder="222922597" required>
             </div>
             <p class="help">The one your packages are assigned to</p>
           </div>
+          <div class="h-captcha" data-sitekey="06ade6bc-1e3f-42be-85d8-f578c2c9de90"></div>
           <div class="control">
             <input type="submit" class="button" value="Register">
           </div>
@@ -187,5 +188,6 @@
     </div>
   </div>
   <script src="assets/index.js"></script>
+  <script src="https://hcaptcha.com/1/api.js" async defer></script>
   </body>
 </html>