diff --git a/.tci b/.tci
index 93a2a87..5853337 100755
--- a/.tci
+++ b/.tci
@@ -4,3 +4,14 @@ echo "building tci"
 cargo build --release
 echo "installing tci"
 cp ./target/release/tci /opt/bin/tci
+
+# note that tci can NOT overwrite itself while it's running!
+#  to make this work, tci is the only repo with a custom hook
+#  installed: it just copies tci bin in a temp path and runs
+#  it from there, so the `cp` command above won't fail
+#
+# here is my custom post-update hook for tci:
+#	#!/bin/bash
+#	cp /opt/bin/tci /srv/git/.tci-tmp-ci
+#	/srv/git/.tci-tmp-ci $@
+#	rm /srv/git/.tci-tmp-ci