diff --git a/website/docs/configuration-options.md b/website/docs/configuration-options.md
index 85d8a17dbc426f5007b7d4805c02a654d720e47a..d3d08689128ee8b2c3ff5482b887a66aadd45b20 100644
--- a/website/docs/configuration-options.md
+++ b/website/docs/configuration-options.md
@@ -943,7 +943,7 @@ Behaviour:
 - `bump` = e.g. bump the range even if the new version satisifies the existing range, e.g. `^1.0.0` -> `^1.1.0`
 - `replace` = Replace the range with a newer one if the new version falls outside it, e.g. `^1.0.0` -> `^2.0.0`
 - `widen` = Widen the range with newer one, e.g. `^1.0.0` -> `^1.0.0 || ^2.0.0`
-- `update-lockfile` = Update the lock file when in-range updates are available, otherwise `replace` for updates out of range
+- `update-lockfile` = Update the lock file when in-range updates are available, otherwise `replace` for updates out of range. Works only for `npm` and `yarn` so far.
 
 Renovate's `"auto"` strategy works like this for npm: