diff --git a/scratchcommunication/__init__.py b/scratchcommunication/__init__.py
index 6e34f2d..2171516 100644
--- a/scratchcommunication/__init__.py
+++ b/scratchcommunication/__init__.py
@@ -2,7 +2,7 @@
 Module for communicating with scratch projects.
 """
 
-__version_number__ = '2.5.1'
+__version_number__ = '2.5.2'
 
 from .session import *
 from .cloud import *
diff --git a/scratchcommunication/cloudrequests/requests.py b/scratchcommunication/cloudrequests/requests.py
index edce09f..aaf3257 100644
--- a/scratchcommunication/cloudrequests/requests.py
+++ b/scratchcommunication/cloudrequests/requests.py
@@ -98,6 +98,8 @@ def execute_request(self, name, *, args : Sequence[Any], kwargs : Mapping[str, A
         return_converter = lambda x : x
         if request_handling_function.auto_convert:
             for idx, (arg, annotation) in enumerate(inspect.signature(request_handling_function).parameters.items()):
+                if not annotation.kind.value in [0, 1, 3]:
+                    continue
                 if inspect.Parameter.empty == annotation.annotation:
                     continue
                 if not arg in kwargs:
diff --git a/setup.py b/setup.py
index ed444c9..3acfc87 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 with open("README.md", encoding="utf-8") as f:
     long_description = f.read()
     
-VERSION = '2.5.1'
+VERSION = '2.5.2'
 
 setup(
     name='scratchcommunication',