diff --git a/admin/git_hooks/post-commit b/admin/git_hooks/post-commit
index c61bf3a2b..e51ca26f7 100755
--- a/admin/git_hooks/post-commit
+++ b/admin/git_hooks/post-commit
@@ -7,6 +7,6 @@
 
 # see wiki/index.html#GitNotes%20GitAliases for information
 
-git sign "$(git config user.email)/$(git-symbolic-ref HEAD | cut -d/ -f 3-)_signature"
+git tag -s -f -m "signature generated by $(git config user.email)" "$(git config user.email)/$(git-symbolic-ref HEAD | cut -d/ -f 3-)_signature"
 git push --all public
 git push --tags public