diff --git a/ipyparallel/serialize/codeutil.py b/ipyparallel/serialize/codeutil.py
index 2d3acfa2a..80d107765 100644
--- a/ipyparallel/serialize/codeutil.py
+++ b/ipyparallel/serialize/codeutil.py
@@ -27,7 +27,8 @@ def code_ctor(*args):
 }
 # pass every supported arg to the code constructor
 # this should be more forward-compatible
-if sys.version_info >= (3, 10):
+# (broken on pypy: https://github.com/ipython/ipyparallel/issues/845)
+if sys.version_info >= (3, 10) and not hasattr(sys, "pypy_version_info"):
     _code_attr_names = tuple(
         _code_attr_map.get(name, name)
         for name, param in inspect.signature(types.CodeType).parameters.items()