diff --git a/slic/utils/json.py b/slic/utils/json.py
index 79ab5cc40..77f26e0ff 100644
--- a/slic/utils/json.py
+++ b/slic/utils/json.py
@@ -1,8 +1,9 @@
 import json
 import numpy as np
+from pathlib import Path
 
 
-class NumpyJSONEncoder(json.JSONEncoder):
+class ExtendedJSONEncoder(json.JSONEncoder):
 
     def default(self, obj):
         if isinstance(obj, np.ndarray):
@@ -11,15 +12,17 @@ class NumpyJSONEncoder(json.JSONEncoder):
             return obj.item()
         elif isinstance(obj, complex): # covers builtin complex
             return {"real": obj.real, "imag": obj.imag}
+        elif isinstance(obj, Path):
+            return str(obj)
         return super().default(obj)
 
 
 
 def json_validate(obj):
-    return json.loads(json.dumps(obj, cls=NumpyJSONEncoder))
+    return json.loads(json.dumps(obj, cls=ExtendedJSONEncoder))
 
 
-def json_save(what, filename, *args, indent=4, sort_keys=True, cls=NumpyJSONEncoder, **kwargs):
+def json_save(what, filename, *args, indent=4, sort_keys=True, cls=ExtendedJSONEncoder, **kwargs):
     with open(filename, "w") as f:
         json.dump(what, f, *args, indent=indent, sort_keys=sort_keys, cls=cls, **kwargs)