diff --git a/mesures/p5d.py b/mesures/p5d.py
index a1b8f1e..79b24ab 100644
--- a/mesures/p5d.py
+++ b/mesures/p5d.py
@@ -104,6 +104,12 @@ def writer(self):
         P5D contains an hourly raw curve
         :return: file path
         """
+        existing_files = os.listdir('/tmp')
+        if existing_files:
+            versions = [int(f.split('.')[1]) for f in existing_files if self.filename.split('.')[0] in f]
+            if versions:
+                self.version = max(versions) + 1
+
         file_path = os.path.join('/tmp', self.filename)
         kwargs = {'sep': ';',
                   'header': False,