diff --git a/Makefile b/Makefile
index 85b29ce..45b7736 100644
--- a/Makefile
+++ b/Makefile
@@ -64,6 +64,7 @@ SOPEL_SELECTORS := \
 # test_regressions::testTagCap fails: https://bugs.unrealircd.org/view.php?id=5948
 # test_messages::testLineTooLong fails: https://bugs.unrealircd.org/view.php?id=5947
 # testCapRemovalByClient and testNakWhole fail pending https://github.com/unrealircd/unrealircd/pull/148
+# test_account_tag::testInvite fails: https://bugs.unrealircd.org/view.php?id=5951
 # Tests marked with arbitrary_client_tags can't pass because Unreal whitelists which tags it relays
 # Tests marked with react_tag can't pass because Unreal blocks +draft/react https://github.com/unrealircd/unrealircd/pull/149
 UNREALIRCD_SELECTORS := \
@@ -74,6 +75,7 @@ UNREALIRCD_SELECTORS := \
 	and not (test_regressions and testTagCap) \
 	and not (test_messages and testLineTooLong) \
 	and not (test_cap and (testCapRemovalByClient or testNakWhole)) \
+	and not (test_account_tag and testInvite) \
 	and not arbitrary_client_tags \
 	and not react_tag \
 	$(EXTRA_SELECTORS)
diff --git a/irctest/basecontrollers.py b/irctest/basecontrollers.py
index fa59bbd..827638e 100644
--- a/irctest/basecontrollers.py
+++ b/irctest/basecontrollers.py
@@ -252,7 +252,10 @@ class BaseServicesController(_BaseController):
         c.connect(self.server_controller.hostname, self.server_controller.port)
         c.sendLine("NICK chkNS")
         c.sendLine("USER chk chk chk chk")
-        c.getMessages(synchronize=False)
+        for msg in c.getMessages(synchronize=False):
+            if msg.command == "PING":
+                # Hi Unreal
+                c.sendLine("PONG :" + msg.params[0])
         c.getMessages()
 
         timeout = time.time() + 5
diff --git a/irctest/controllers/atheme_services.py b/irctest/controllers/atheme_services.py
index bdd0021..3b5739d 100644
--- a/irctest/controllers/atheme_services.py
+++ b/irctest/controllers/atheme_services.py
@@ -58,7 +58,7 @@ class AthemeServices(BaseServicesController, DirectoryBasedController):
     def run(self, protocol: str, server_hostname: str, server_port: int) -> None:
         self.create_config()
 
-        assert protocol in ("inspircd", "charybdis")
+        assert protocol in ("inspircd", "charybdis", "unreal4")
 
         with self.open_file("services.conf") as fd:
             fd.write(
diff --git a/irctest/controllers/unrealircd.py b/irctest/controllers/unrealircd.py
index da859cd..1be4415 100644
--- a/irctest/controllers/unrealircd.py
+++ b/irctest/controllers/unrealircd.py
@@ -7,6 +7,7 @@ from irctest.basecontrollers import (
     DirectoryBasedController,
     NotImplementedByController,
 )
+from irctest.controllers.atheme_services import AthemeServices
 from irctest.irc_utils.junkdrawer import find_hostname_and_port
 
 TEMPLATE_CONFIG = """
@@ -63,7 +64,7 @@ listen {{
 
 link services.example.org {{
     incoming {{
-        mask localhost;
+        mask *;
     }}
     password "password";
     class servers;
@@ -73,6 +74,7 @@ ulines {{
 }}
 
 set {{
+    sasl-server services.example.org;
     kline-address "example@example.org";
     network-name "ExampleNET";
     default-server "irc.example.org";
@@ -175,7 +177,13 @@ class UnrealircdController(BaseServerController, DirectoryBasedController):
         )
 
         if run_services:
-            raise NotImplementedByController("Registration services")
+            self.wait_for_port()
+            self.services_controller = AthemeServices(self.test_config, self)
+            self.services_controller.run(
+                protocol="unreal4",
+                server_hostname=services_hostname,
+                server_port=services_port,
+            )
 
 
 def get_irctest_controller_class() -> Type[UnrealircdController]: