diff --git a/docs/topic/idle-culler.rst b/docs/topic/idle-culler.rst
index 86d53ed..b8c520b 100644
--- a/docs/topic/idle-culler.rst
+++ b/docs/topic/idle-culler.rst
@@ -12,7 +12,7 @@ JupyterHub pings the user's notebook server at certain time intervals. If no res
 is received from the server during this checks and the timeout expires, the server is
 considered to be *inactive (idle)* and will be culled.
 
-The idle culler is a JupyterHub service that is installed and enabled by default in TLJH.
+The `idle culler <https://github.com/jupyterhub/jupyterhub-idle-culler>`_ is a JupyterHub service that is installed and enabled by default in TLJH.
 It can be configured using tljh-config. For advanced use-cases, like purging old user data,
 the idle culler configuration can be extended beyond tljh-config options, using custom 
 `jupyterhub_config.py snippets <https://tljh.jupyter.org/en/latest/topic/escape-hatch.html?highlight=escape-hatch#extending-jupyterhub-config-py>`__.