diff --git a/README.md b/README.md
index d13786e..59b4897 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,8 @@
 1. install topiary-cli (0.5.1 above)
 2. clone this repo to `$env.XDG_CONFIG_HOME/topiary`
 3. set environment variables
-```nu
+
+```nushell
 $env.TOPIARY_CONFIG_FILE = ($env.XDG_CONFIG_HOME | path join topiary languages.ncl)
 $env.TOPIARY_LANGUAGE_DIR = ($env.XDG_CONFIG_HOME | path join topiary languages)
 ```
@@ -54,7 +55,7 @@ while the latest release of topiary-cli still uses the other way.
 
 Help to find format issues with following method (dry-run, detects parsing/idempotence/semantic breaking):
 
-```nu
+```nushell
 source utils.nu
 test_format <root-path-of-your-nushell-scripts>
 ```