diff --git a/terminfo/models.txt b/terminfo/models.txt
index feea5e2..f54a722 100644
--- a/terminfo/models.txt
+++ b/terminfo/models.txt
@@ -14,7 +14,7 @@ pcansi
 rxvt,rxvt-256color,rxvt-88color,rxvt-unicode,rxvt-unicode-256color
 screen,screen-256color
 st,st-256color|simpleterm
-tmux
+tmux,tmux-256color
 vt52
 vt100
 vt102
diff --git a/terminfo/t/tmux/term.go b/terminfo/t/tmux/term.go
index 6c8be35..8aa76a0 100644
--- a/terminfo/t/tmux/term.go
+++ b/terminfo/t/tmux/term.go
@@ -72,4 +72,71 @@ func init() {
 		DottedUnderline: "\x1b[4:4m",
 		DashedUnderline: "\x1b[4:5m",
 	})
+
+	// tmux with 256 colors
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:            "tmux-256color",
+		Columns:         80,
+		Lines:           24,
+		Colors:          256,
+		Bell:            "\a",
+		Clear:           "\x1b[H\x1b[J",
+		EnterCA:         "\x1b[?1049h",
+		ExitCA:          "\x1b[?1049l",
+		ShowCursor:      "\x1b[34h\x1b[?25h",
+		HideCursor:      "\x1b[?25l",
+		AttrOff:         "\x1b[m\x0f",
+		Underline:       "\x1b[4m",
+		Bold:            "\x1b[1m",
+		Dim:             "\x1b[2m",
+		Italic:          "\x1b[3m",
+		Blink:           "\x1b[5m",
+		Reverse:         "\x1b[7m",
+		EnterKeypad:     "\x1b[?1h\x1b=",
+		ExitKeypad:      "\x1b[?1l\x1b>",
+		SetFg:           "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:           "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:         "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:       "\x1b[39;49m",
+		PadChar:         "\x00",
+		AltChars:        "++,,--..00``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:        "\x0e",
+		ExitAcs:         "\x0f",
+		EnableAcs:       "\x1b(B\x1b)0",
+		StrikeThrough:   "\x1b[9m",
+		Mouse:           "\x1b[M",
+		SetCursor:       "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:     "\b",
+		CursorUp1:       "\x1bM",
+		KeyUp:           "\x1bOA",
+		KeyDown:         "\x1bOB",
+		KeyRight:        "\x1bOC",
+		KeyLeft:         "\x1bOD",
+		KeyInsert:       "\x1b[2~",
+		KeyDelete:       "\x1b[3~",
+		KeyBackspace:    "\x7f",
+		KeyHome:         "\x1b[1~",
+		KeyEnd:          "\x1b[4~",
+		KeyPgUp:         "\x1b[5~",
+		KeyPgDn:         "\x1b[6~",
+		KeyF1:           "\x1bOP",
+		KeyF2:           "\x1bOQ",
+		KeyF3:           "\x1bOR",
+		KeyF4:           "\x1bOS",
+		KeyF5:           "\x1b[15~",
+		KeyF6:           "\x1b[17~",
+		KeyF7:           "\x1b[18~",
+		KeyF8:           "\x1b[19~",
+		KeyF9:           "\x1b[20~",
+		KeyF10:          "\x1b[21~",
+		KeyF11:          "\x1b[23~",
+		KeyF12:          "\x1b[24~",
+		KeyBacktab:      "\x1b[Z",
+		Modifiers:       1,
+		AutoMargin:      true,
+		DoubleUnderline: "\x1b[4:2m",
+		CurlyUnderline:  "\x1b[4:3m",
+		DottedUnderline: "\x1b[4:4m",
+		DashedUnderline: "\x1b[4:5m",
+	})
 }