diff --git a/README b/README
index f061d03..c7bdc22 100644
--- a/README
+++ b/README
@@ -5,7 +5,7 @@ girara user interface library and several document libraries.
 
 Requirements
 ------------
-gtk3
+gtk3 (>= 3.6)
 glib (>= 2.32)
 girara (>= 0.2.4)
 sqlite3 (optional, >= 3.5.9)