diff --git a/xtask/templates/install-command.bash.txt b/xtask/templates/install-command.bash.txt
index f1fab64..04d4844 100644
--- a/xtask/templates/install-command.bash.txt
+++ b/xtask/templates/install-command.bash.txt
@@ -1,3 +1,5 @@
+# Automatically generated by https://github.com/qryxip/proposal-for-atcoder-language-update/tree/{{ git_rev }}
+
 set -e
 
 sudo apt-get install -y --no-install-recommends build-essential ca-certificates curl