diff --git a/dunamai/__init__.py b/dunamai/__init__.py
index d16e9e7..a09c56a 100644
--- a/dunamai/__init__.py
+++ b/dunamai/__init__.py
@@ -815,7 +815,7 @@ def from_git(
             return cls("0.0.0", distance=0, dirty=True, branch=branch)
         commit = msg
 
-        code, msg = _run_cmd('git log -n 1 --pretty=format:"%cI"')
+        code, msg = _run_cmd('git log --no-show-signature -n 1 --pretty=format:"%cI"')
         timestamp = _parse_git_timestamp_iso_strict(msg)
 
         code, msg = _run_cmd("git describe --always --dirty")