diff --git a/allauth/account/adapter.py b/allauth/account/adapter.py
index cc51a30cda..01fff7bf7f 100644
--- a/allauth/account/adapter.py
+++ b/allauth/account/adapter.py
@@ -243,7 +243,7 @@ def is_open_for_signup(self, request):
         Next to simply returning True/False you can also intervene the
         regular flow by raising an ImmediateHttpResponse
         """
-        return True
+        return app_settings.ALLOW_SIGNUP
 
     def new_user(self, request):
         """
diff --git a/allauth/account/app_settings.py b/allauth/account/app_settings.py
index fe1c2a2156..6c595a10ef 100644
--- a/allauth/account/app_settings.py
+++ b/allauth/account/app_settings.py
@@ -144,6 +144,13 @@ def UNIQUE_EMAIL(self):
         Enforce uniqueness of email addresses
         """
         return self._setting("UNIQUE_EMAIL", True)
+    
+    @property
+    def ALLOW_SIGNUP(self):
+        """
+        Allow new registrations.
+        """
+        return self._setting("ALLOW_SIGNUP", True)
 
     @property
     def SIGNUP_EMAIL_ENTER_TWICE(self):