diff --git a/src/client.py b/src/client.py
--- a/src/client.py
+++ b/src/client.py
@@ -167,6 +167,7 @@ class Client(NetNode):
 
 					t = datetime.now().timestamp()
 					if t-last_flushed >= 60:
+						data_file.flush()
 						if self._tree_file:
 							self._update_tree()
 						self._refresh_lock()