diff --git a/README.md b/README.md
index 354f73f..4fd6e42 100644
--- a/README.md
+++ b/README.md
@@ -111,6 +111,14 @@ Got a list of default packages you want installed every time you install a new N
 set --universal nvm_default_packages yarn np
 ```
 
+## `$nvm_data`
+
+Set where nvm stores Node binaries and related data. Defaults to `$XDG_DATA_HOME/nvm` (~/.local/share/nvm) if unset.
+
+```fish
+set --global nvm_data ~/.nvm
+```
+
 ## Acknowledgments
 
 `nvm.fish` was established in 2016 by [**@jorgebucaran**](https://github.com/jorgebucaran) as the go-to Node.js version manager for Fish. It was inspired by the original [**nvm.sh**](https://github.com/nvm-sh/nvm) created by [**@creationix**](https://github.com/creationix) and [**@ljharb**](https://github.com/ljharb). To use the original nvm in Fish, consider [**@FabioAntunes/fish-nvm**](https://github.com/FabioAntunes/fish-nvm) or [**@derekstavis/plugin-nvm**](https://github.com/derekstavis/plugin-nvm). We appreciate all of our contributors! ❤️
diff --git a/conf.d/nvm.fish b/conf.d/nvm.fish
index e060f2f..7545699 100644
--- a/conf.d/nvm.fish
+++ b/conf.d/nvm.fish
@@ -1,6 +1,6 @@
-set --query nvm_mirror || set --global nvm_mirror https://nodejs.org/dist
 set --query XDG_DATA_HOME || set --local XDG_DATA_HOME ~/.local/share
-set --global nvm_data $XDG_DATA_HOME/nvm
+set --query nvm_mirror || set --global nvm_mirror https://nodejs.org/dist
+set --query nvm_data || set --global nvm_data $XDG_DATA_HOME/nvm
 
 function _nvm_install --on-event nvm_install
     test ! -d $nvm_data && command mkdir -p $nvm_data
diff --git a/functions/nvm.fish b/functions/nvm.fish
index b7d70de..f76b261 100644
--- a/functions/nvm.fish
+++ b/functions/nvm.fish
@@ -49,6 +49,7 @@ function nvm --description "Node version manager"
             echo "       nvm_mirror               Use a mirror for downloading Node binaries"
             echo "       nvm_default_version      Set the default version for new shells"
             echo "       nvm_default_packages     Install a list of packages every time a Node version is installed"
+            echo "       nvm_data                 Set a custom directory for storing nvm data"
             echo "Examples:"
             echo "       nvm install latest       Install the latest version of Node"
             echo "       nvm use 14.15.1          Use Node version 14.15.1"