diff --git a/README.md b/README.md
index 0307791..218525b 100644
--- a/README.md
+++ b/README.md
@@ -153,6 +153,10 @@ The configuration file path follows OS conventions. It can be queried with the f
 
     $ tldr --config-path
 
+The directory where the configuration file resides may be overwritten by the
+environment variable `TEALDEER_CONFIG_DIR`. Remember to use an absolute path.
+Variable expansion will not be performed on the path.
+
 ### Style
 
 Using the config file, the style (e.g. colors or underlines) can be customized.