diff --git a/portal/forms/play.py b/portal/forms/play.py
index 9f9d3ad4d..8a3a6893f 100644
--- a/portal/forms/play.py
+++ b/portal/forms/play.py
@@ -222,7 +222,7 @@ class IndependentStudentSignupForm(forms.Form):
         widget=forms.PasswordInput(attrs={"autocomplete": "off", "placeholder": "Repeat password"}),
     )
 
-    # captcha = ReCaptchaField(widget=ReCaptchaV2Invisible)
+    captcha = ReCaptchaField(widget=ReCaptchaV2Invisible)
 
     def clean_name(self):
         name = self.cleaned_data.get("name", None)
diff --git a/portal/forms/teach.py b/portal/forms/teach.py
index d19fd97bb..9b30310d9 100644
--- a/portal/forms/teach.py
+++ b/portal/forms/teach.py
@@ -86,7 +86,7 @@ class TeacherSignupForm(InvitedTeacherForm):
         ),
     )
 
-    # captcha = ReCaptchaField(widget=ReCaptchaV2Invisible)
+    captcha = ReCaptchaField(widget=ReCaptchaV2Invisible)
 
 
 class TeacherEditAccountForm(forms.Form):
diff --git a/portal/templates/captcha/includes/js_v2_invisible.html b/portal/templates/django_recaptcha/includes/js_v2_invisible.html
similarity index 89%
rename from portal/templates/captcha/includes/js_v2_invisible.html
rename to portal/templates/django_recaptcha/includes/js_v2_invisible.html
index 14f9bfc3d..caa32ce6a 100644
--- a/portal/templates/captcha/includes/js_v2_invisible.html
+++ b/portal/templates/django_recaptcha/includes/js_v2_invisible.html
@@ -1,8 +1,8 @@
-{# This is adapted from django-recaptcha 2.0.5 to work on multiple reCAPTCHA's on the same page #}
-{# See verifyCaptcha_{{ widget_uuid}} for the edit #}
+<!-- This is adapted from django-recaptcha 4.0.0 to work on multiple
+reCAPTCHA's on the same page
+See verifyCaptcha_{{ widget_uuid}} for the edit #} -->
 <script src="https://{{ recaptcha_domain }}/recaptcha/api.js{% if api_params %}?{{ api_params }}{% endif %}"></script>
 <script type="text/javascript">
-
     // Submit function to be called, after reCAPTCHA was successful.
     var onSubmit_{{ widget_uuid }} = function(token) {
         console.log("reCAPTCHA validated for 'data-widget-uuid=\"{{ widget_uuid }}\"'. Submitting form...")
diff --git a/portal/templates/captcha/widget_v2_invisible.html b/portal/templates/django_recaptcha/widget_v2_invisible.html
similarity index 66%
rename from portal/templates/captcha/widget_v2_invisible.html
rename to portal/templates/django_recaptcha/widget_v2_invisible.html
index 5caa71201..20d8c0411 100644
--- a/portal/templates/captcha/widget_v2_invisible.html
+++ b/portal/templates/django_recaptcha/widget_v2_invisible.html
@@ -1,5 +1,5 @@
-{# copied from django-recaptcha 2.0.5 #}
-{% include "captcha/includes/js_v2_invisible.html" %}
+<!-- copied from django-recaptcha 4.0.0 -->
+{% include "django_recaptcha/includes/js_v2_invisible.html" %}
 <div class="g-recaptcha"
     {% for name, value in widget.attrs.items %}{% if value is not False %} {{ name }}{% if value is not True %}="{{ value|stringformat:'s' }}"{% endif %}{% endif %}{% endfor %}
 >