diff --git a/README.md b/README.md
index 7d4997b..9a053d9 100644
--- a/README.md
+++ b/README.md
@@ -207,7 +207,7 @@ brew install cairo pango
 **Ubuntu / Debian:**
 
 ```bash
-apt install libcairo2-dev libgirepository1.0-dev
+apt install libcairo2-dev libgirepository1.0-dev libpango1.0-dev
 ```
 
 Python 3.13 or later is required.