diff --git a/justfile b/justfile
index 1585c5e..8b1ea48 100644
--- a/justfile
+++ b/justfile
@@ -16,6 +16,8 @@ build-dev:
 
 update-modification-dates:
   MOONYTHM_UPDATE_LAST_MODIFIED=1 cargo run
+  git add last_modified.toml
+  git commit -m "Update `last_modified.toml`"
 # }}}
 # {{{ Linting
 lint: lint-vnu lint-css lint-htmltest lint-htmlvalidate