diff --git a/st.info b/st.info
index d411be7..13cc8eb 100644
--- a/st.info
+++ b/st.info
@@ -185,7 +185,10 @@ st| simpleterm,
 	tsl=\E]0;,
 	xenl,
 	vpa=\E[%i%p1%dd,
-
+# Tmux unofficial extensions, see TERMINFO EXTENSIONS in tmux(1)
+	Se,
+	Ss,
+	Tc,
 
 st-256color| simpleterm with 256 colors,
 	use=st,