diff --git a/changelog.d/+use-copy-for-statedump.fixed.md b/changelog.d/+use-copy-for-statedump.fixed.md
new file mode 100644
index 00000000..470dedb4
--- /dev/null
+++ b/changelog.d/+use-copy-for-statedump.fixed.md
@@ -0,0 +1 @@
+Use a copy of the Zino state for saving it to a file to avoid errors due to changes to the state in the middle of saving
diff --git a/src/zino/state.py b/src/zino/state.py
index 29cd4d8f..bc877a4b 100644
--- a/src/zino/state.py
+++ b/src/zino/state.py
@@ -42,8 +42,9 @@ class ZinoState(BaseModel):
     def dump_state_to_file(self, filename: str):
         """Dumps the full state to a file in JSON format"""
         _log.debug("dumping state to %s", filename)
+        copied_state = self.model_copy()
         with open(filename, "w") as statefile:
-            statefile.write(self.model_dump_json(exclude_none=True, indent=2))
+            statefile.write(copied_state.model_dump_json(exclude_none=True, indent=2))
 
     @classmethod
     @log_time_spent()