diff --git a/pyproject.toml b/pyproject.toml
index 04882023..e2ef20db 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -70,7 +70,7 @@ dependencies = [
     "numpy>=1.21.3, < 2",
     "pyqtgraph>=0.13.0",
     "PySide2==5.15.2.1",
-    "rpyc>=5.0.1, <6",
+    "rpyc>=6.0.1",
     "ruamel.yaml>=0.17.16",
     "scipy>=1.7.1",
     "jsonschema>=4.2.1",
diff --git a/src/qudi/core/connector.py b/src/qudi/core/connector.py
index 86eb057c..5ffa319c 100644
--- a/src/qudi/core/connector.py
+++ b/src/qudi/core/connector.py
@@ -85,8 +85,7 @@ def is_connected(self) -> bool:
     def connect(self, target: Any) -> None:
         """ Check if target is connectible by this connector and connect.
         """
-        bases = {cls.__name__ for cls in target.__class__.mro()}
-        if self.interface not in bases:
+        if self.interface not in target._meta['mro']:
             raise RuntimeError(
                 f'Module "{target}" connected to connector "{self.name}" does not implement '
                 f'interface "{self.interface}".'
diff --git a/src/qudi/core/meta.py b/src/qudi/core/meta.py
index 6c787d1f..16207517 100644
--- a/src/qudi/core/meta.py
+++ b/src/qudi/core/meta.py
@@ -100,4 +100,6 @@ def __new__(mcs, name, bases, attributes):
                 elif base.__name__ == 'Base':
                     cls._meta['base'] = 'hardware'
                     break
+            # keep module resolution order as reference for which interface is implemented
+            cls._meta['mro'] = [base.__name__ for base in cls.mro()]
         return cls