diff --git a/mnemosyne/mnemosyne/templates/socialaccount/signup.html b/mnemosyne/mnemosyne/templates/socialaccount/signup.html
new file mode 100644
index 0000000..09bcadb
--- /dev/null
+++ b/mnemosyne/mnemosyne/templates/socialaccount/signup.html
@@ -0,0 +1,51 @@
+{% extends "themis/base.html" %}
+
+{% block title %}Complete Sign Up — {{ themis_app_name }}{% endblock %}
+
+{% block content %}
+<div class="flex justify-center items-center min-h-[60vh]">
+    <div class="card bg-base-200 shadow-xl w-full max-w-md">
+        <div class="card-body">
+            <h2 class="card-title text-2xl justify-center mb-2">Complete Sign Up</h2>
+            <p class="text-center text-base-content/70 mb-4">
+                Confirm your email address to finish signing in with SSO.
+            </p>
+
+            {% if form.errors %}
+            <div class="alert alert-error mb-4">
+                <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5 shrink-0" fill="none"
+                     viewBox="0 0 24 24" stroke="currentColor">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
+                          d="M12 9v2m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
+                </svg>
+                <span>Please correct the errors below.</span>
+            </div>
+            {% endif %}
+
+            <form method="post" action="{{ action_url }}">
+                {% csrf_token %}
+
+                <div class="form-control mb-6">
+                    <label class="label" for="id_email">
+                        <span class="label-text">Email</span>
+                    </label>
+                    <input type="email" name="email" id="id_email"
+                           class="input input-bordered w-full{% if form.email.errors %} input-error{% endif %}"
+                           value="{{ form.email.value|default:'' }}"
+                           autocomplete="email" required>
+                    {% if form.email.errors %}
+                    <label class="label">
+                        <span class="label-text-alt text-error">{{ form.email.errors|join:", " }}</span>
+                    </label>
+                    {% endif %}
+                </div>
+
+                <div class="form-control mt-2">
+                    <button type="submit" class="btn btn-primary w-full">Complete Sign Up</button>
+                </div>
+            </form>
+
+        </div>
+    </div>
+</div>
+{% endblock %}
diff --git a/mnemosyne/themis/adapters.py b/mnemosyne/themis/adapters.py
index b647dde..3ce6fbf 100644
--- a/mnemosyne/themis/adapters.py
+++ b/mnemosyne/themis/adapters.py
@@ -1,7 +1,7 @@
 import logging
 
 from allauth.account.adapter import DefaultAccountAdapter
-from allauth.exceptions import ImmediateHttpResponse
+from allauth.core.exceptions import ImmediateHttpResponse
 from allauth.socialaccount.adapter import DefaultSocialAccountAdapter
 from django.contrib import messages
 from django.contrib.auth.models import Group
diff --git a/mnemosyne/themis/tests/test_adapters.py b/mnemosyne/themis/tests/test_adapters.py
index d514a8f..3df09ad 100644
--- a/mnemosyne/themis/tests/test_adapters.py
+++ b/mnemosyne/themis/tests/test_adapters.py
@@ -88,7 +88,7 @@ class CasdoorAdapterTest(TestCase):
         self.assertEqual(user.groups.count(), 0)
 
     def test_superuser_sso_login_blocked(self):
-        from allauth.exceptions import ImmediateHttpResponse
+        from allauth.core.exceptions import ImmediateHttpResponse
 
         user = User.objects.create_superuser(
             "admin@example.com", "admin@example.com", "pass"