diff --git a/setup_docs.py b/setup_docs.py
index 9513604b..6698134f 100644
--- a/setup_docs.py
+++ b/setup_docs.py
@@ -7,6 +7,7 @@ import sys
 import textwrap
 from collections import OrderedDict
 from datetime import datetime
+import time
 
 from setuptools import Command
 
@@ -459,7 +460,10 @@ class build_man(Command):
         self.write_heading(write, description, double_sided=True)
         # man page metadata
         write(':Author: The Borg Collective')
-        write(':Date:', datetime.utcnow().date().isoformat())
+        write(
+            ':Date:',
+            datetime.utcfromtimestamp(int(os.environ.get('SOURCE_DATE_EPOCH', time.time()))).date().isoformat(),
+        )
         write(':Manual section: 1')
         write(':Manual group: borg backup tool')
         write()