diff --git a/src/textual/_ansi_sequences.py b/src/textual/_ansi_sequences.py
index bcb1fda57f..39d01b52cd 100644
--- a/src/textual/_ansi_sequences.py
+++ b/src/textual/_ansi_sequences.py
@@ -112,6 +112,8 @@
     "\x1b[21;2~": (Keys.F22,),
     "\x1b[23;2~": (Keys.F23,),
     "\x1b[24;2~": (Keys.F24,),
+    "\x1b[23$": (Keys.F23,),  # rxvt
+    "\x1b[24$": (Keys.F24,),  # rxvt
     # --
     # Control + function keys.
     "\x1b[1;5P": (Keys.ControlF1,),