diff --git a/poky/meta/lib/oe/reproducible.py b/poky/meta/lib/oe/reproducible.py
index 04a1810..9ac75c0 100644
--- a/poky/meta/lib/oe/reproducible.py
+++ b/poky/meta/lib/oe/reproducible.py
@@ -115,7 +115,8 @@
         return None
 
     bb.debug(1, "git repository: %s" % gitpath)
-    p = subprocess.run(['git', '--git-dir', gitpath, 'log', '-1', '--pretty=%ct'], check=True, stdout=subprocess.PIPE)
+    p = subprocess.run(['git', '-c', 'log.showSignature=false', '--git-dir', gitpath, 'log', '-1', '--pretty=%ct'],
+                       check=True, stdout=subprocess.PIPE)
     return int(p.stdout.decode('utf-8'))
 
 def get_source_date_epoch_from_youngest_file(d, sourcedir):