diff --git a/docs/configuration.md b/docs/configuration.md
index e932c66..4fbf508 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -1,3 +1,6 @@
 # Configuration
 
 An comprehensive list of all the available config options, with detailed explaination and default values is available under [`config/config.example.yml`](https://github.com/iv-org/invidious/blob/master/config/config.example.yml) in the main invidious repository.
+
+The path to the configuration file can be overridden with the
+`INVIDIOUS_CONFIG_FILE` environment variable.