diff --git a/rowers/forms.py b/rowers/forms.py
index ad865dd6..e00c49b7 100644
--- a/rowers/forms.py
+++ b/rowers/forms.py
@@ -1066,7 +1066,8 @@ class RegistrationFormSex(RegistrationFormUniqueEmail):
                               month=4,
                               day=15))
     
-    url = HoneypotField(label="URL")
+    hp_field = HoneypotField(label="URL")
+    timestamp = forms.CharField(widget=forms.HiddenInput(), required=False)
     
     def clean_birthdate(self):
         dob = self.cleaned_data['birthdate']
@@ -1087,6 +1088,22 @@ class RegistrationFormSex(RegistrationFormUniqueEmail):
     adaptiveclass = forms.ChoiceField(label='Adaptive Classification',
                                       choices=adaptivecategories, initial='None', required=False)
 
+    captcha = ReCaptchaField(widget=ReCaptchaV3(
+            attrs={
+                    'required_score': 0.85,   
+            }))
+
+
+    def clean(self):
+        cleaned_data = super().clean()
+        timestamp = cleaned_data.get('timestamp')
+        if timestamp:
+                submission_time = timezone.now()
+                form_render_time = timezone.datetime.fromtimestamp(float(timestamp), tz=timezone.get_current_timezone())
+                if (submission_time - form_render_time).seconds < 3:
+                        raise forms.ValidationError("Form submitted too quickly. Are you a bot?")
+        return cleaned_data
+
 
 class PowerIntervalUpdateForm(forms.Form):
     selectorchoices = (
diff --git a/rowers/templates/registration_form.html b/rowers/templates/registration_form.html
index 29328f81..1c3cce24 100644
--- a/rowers/templates/registration_form.html
+++ b/rowers/templates/registration_form.html
@@ -31,6 +31,8 @@
         <table width=100%>
           {{ form.as_table }}
         </table>
+	 <!-- Manually add the timestamp field -->
+	<input type="hidden" name="timestamp" value="{{ timestamp }}">
 	<p>
           <a href="/rowers/legal/">Terms of Service</a>
 	</p>
diff --git a/rowers/tests/test_newusers.py b/rowers/tests/test_newusers.py
index 138643cb..a47e7b8c 100644
--- a/rowers/tests/test_newusers.py
+++ b/rowers/tests/test_newusers.py
@@ -5,7 +5,8 @@ from __future__ import unicode_literals
 
 #from __future__ import print_function
 from .statements import *
-
+from django_recaptcha.client import RecaptchaResponse
+from django_recaptcha.fields import ReCaptchaField
 nu = datetime.datetime.now()
 
 #@pytest.mark.django_db
@@ -22,7 +23,11 @@ class NewUserRegistrationTest(TestCase):
             pass
 
     @patch('rowers.dataprep.workout_summary_to_df',side_effect=mock_workout_summaries)
-    def test_newuser(self,mock_workout_summaries):
+    @patch("django_recaptcha.fields.client.submit")
+    def test_newuser(self,mock_submit, mock_workout_summaries):
+        mock_response = RecaptchaResponse(is_valid=True, extra_data={'score': 0.95})
+        mock_submit.return_value = mock_response
+
         form_data = {
             'first_name':'Jan',
             'last_name':'Roeiert',
@@ -30,16 +35,21 @@ class NewUserRegistrationTest(TestCase):
             'username':'janderoeiert',
             'password1':'Aapindewei2',
             'password2':'Aapindewei2',
-            'url': '',
+            'hp_field': '',
             'tos':True,
             'weightcategory':'hwt',
             'adaptiveclass': 'None',
             'sex':'male',
+            'captcha': 'PASSED',
+            'g-recaptcha-response': 'PASSED',
             'next':'/rowers/list-workouts',
             'birthdate':datetime.datetime(year=1970,month=4,day=2)
             }
 
         form = RegistrationFormSex(form_data)
+        if not form.is_valid():
+            print(form.errors)
+
         self.assertTrue(form.is_valid())
 
         response = self.c.post('/rowers/register/', form_data, follow=True)
@@ -118,7 +128,7 @@ class NewUserRegistrationTest(TestCase):
             'password1':'aapindewei2',
             'password2':'aapindewei2',
             'tos':True,
-            'url': '',
+            'hp_field': '',
             'weightcategory':'hwt',
             'adaptiveclass': 'None',
             'sex':'male',
@@ -126,6 +136,7 @@ class NewUserRegistrationTest(TestCase):
             'birthdate':datetime.datetime(year=1970,month=4,day=2)
             }
 
+
         form = RegistrationFormSex(form_data)
         self.assertFalse(form.is_valid())
 
@@ -138,7 +149,7 @@ class NewUserRegistrationTest(TestCase):
             'username':'janderoeiert',
             'password1':'Aapindewei2',
             'password2':'Aapindewei2',
-            'url': 'http://example.com',
+            'hp_field': 'http://example.com',
             'tos':True,
             'weightcategory':'hwt',
             'adaptiveclass': 'None',
diff --git a/rowers/tests/testdata/testdata.tcx.gz b/rowers/tests/testdata/testdata.tcx.gz
index 322910d9..b442ff52 100644
Binary files a/rowers/tests/testdata/testdata.tcx.gz and b/rowers/tests/testdata/testdata.tcx.gz differ
diff --git a/rowers/views/paymentviews.py b/rowers/views/paymentviews.py
index fc04b4bc..54808712 100644
--- a/rowers/views/paymentviews.py
+++ b/rowers/views/paymentviews.py
@@ -5,6 +5,7 @@ from django.utils.http import urlsafe_base64_encode, urlsafe_base64_decode
 from django.contrib.auth.backends import ModelBackend
 from rowers.views.statements import *
 from django.core.mail import EmailMessage
+from django_ratelimit.decorators import ratelimit
 
 from rowers import credits
 
@@ -888,6 +889,7 @@ def useractivate(request, uidb64, token):  # pragma: no cover
 
 
 # User registration
+@ratelimit(key='ip', rate='5/h', method='POST')
 def rower_register_view(request):
 
     nextpage = request.GET.get('next', '/rowers/list-workouts/')
@@ -896,7 +898,7 @@ def rower_register_view(request):
 
     if request.method == 'POST':
         # Check if honeypot was triggered (optional logging)
-        honeypot_value = request.POST.get('url', '')
+        honeypot_value = request.POST.get('hp_field', '')
         if honeypot_value:
             # bot user, do not register
             messages.error(request, "Registration failed. Please try again.")
@@ -985,13 +987,15 @@ def rower_register_view(request):
             return render(request,
                           "registration_form.html",
                           {'form': form,
-                           'next': nextpage, })
+                           'next': nextpage,
+                           'timestamp': timezone.now().timestamp(),})
     else:
         form = RegistrationFormSex()
         return render(request,
                       "registration_form.html",
                       {'form': form,
-                       'next': nextpage, })
+                       'next': nextpage,
+                       'timestamp': timezone.now().timestamp(),})
 
 # User registration