diff --git a/BBEdit-instructions.md b/BBEdit-instructions.md
index 8af40ed..73459ef 100644
--- a/BBEdit-instructions.md
+++ b/BBEdit-instructions.md
@@ -1,9 +1,11 @@
-Just run this
+**Only supported version is v. 11**
+
+Run in your terminal:
 
 ```shell
 defaults write com.barebones.bbedit "EnableFontLigatures_Fira Code" -bool YES
 ```
 
-in your terminal.
+Source: https://www.barebones.com/support/bbedit/ExpertPreferences.html
 
 This same preference works for TextWrangler.
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