diff --git a/backend_windows.go b/backend_windows.go
index 6077876..58c1ca0 100644
--- a/backend_windows.go
+++ b/backend_windows.go
@@ -33,10 +33,6 @@ func newBackend() Backend {
 }
 
 func (b *windowsBackend) Init() error {
-	if os.Getenv("WT_SESSION") == "" && os.Getenv("WT_PROFILE_ID") == "" {
-		return fmt.Errorf("Windows Terminal required: WT_SESSION unset; conhost lacks alt screen")
-	}
-
 	if err := windows.GetConsoleMode(b.stdin, &b.oldStdinMode); err != nil {
 		return fmt.Errorf("GetConsoleMode stdin: %w", err)
 	}
diff --git a/detect_unix.go b/detect_unix.go
index 0342918..3ea3373 100644
--- a/detect_unix.go
+++ b/detect_unix.go
@@ -43,10 +43,10 @@ func resetTerminalMode() {
 		defer tty.Close()
 		fd := int(tty.Fd())
 		// Get current termios, enable ECHO and ICANON
-		if termios, err := unix.IoctlGetTermios(fd, unix.TCGETS); err == nil {
+		if termios, err := unix.IoctlGetTermios(fd, tcgets); err == nil {
 			termios.Lflag |= unix.ECHO | unix.ICANON | unix.ISIG | unix.IEXTEN
 			termios.Iflag |= unix.ICRNL
-			unix.IoctlSetTermios(fd, unix.TCSETS, termios)
+			unix.IoctlSetTermios(fd, tcsets, termios)
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/go.mod b/go.mod
index e462937..1d928ab 100644
--- a/go.mod
+++ b/go.mod
@@ -1,9 +1,9 @@
 module github.com/lixenwraith/terminal
 
-go 1.26.0
+go 1.27.1
 
 require (
 	github.com/lixenwraith/color v0.0.0-20260719094342-615e11bc7897
-	golang.org/x/sys v0.47.0
-	golang.org/x/term v0.45.0
+	golang.org/x/sys v0.48.0
+	golang.org/x/term v0.46.0
 )
diff --git a/go.sum b/go.sum
index 659d5b2..809fa9d 100644
--- a/go.sum
+++ b/go.sum
@@ -4,5 +4,9 @@ github.com/lixenwraith/color v0.0.0-20260719094342-615e11bc7897 h1:YkTK1vIzG6sqK
 github.com/lixenwraith/color v0.0.0-20260719094342-615e11bc7897/go.mod h1:p02MsAGqlmZu3sc6BPYCKmaedF+lqBoijnuu5cOrYeo=
 golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
 golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.48.0 h1:bbX/i/6MgT9BVLM9RT1thmxL04yeTAhbEz4SyadbXoo=
+golang.org/x/sys v0.48.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=
 golang.org/x/term v0.45.0 h1:NwWyBmoJCbfTHpxrWoZ9C6/VxOf7ic219I8xZZFdrf0=
 golang.org/x/term v0.45.0/go.mod h1:9aqxs0blBcrm/n0L9QW0aRVD+ktan8ssZromtqJC43w=
+golang.org/x/term v0.46.0 h1:3+OXuTbaKDgwk8jTi3aSLHRlmWqHEUDUtxnbFigO4YE=
+golang.org/x/term v0.46.0/go.mod h1:+K02xbkittuwc0Am4abfA3Fc+XRGXkvBXNO88NCXPoc=
diff --git a/termios_bsd.go b/termios_bsd.go
new file mode 100644
index 0000000..19411db
--- /dev/null
+++ b/termios_bsd.go
@@ -0,0 +1,10 @@
+//go:build darwin || dragonfly || freebsd || netbsd || openbsd
+
+package terminal
+
+import "golang.org/x/sys/unix"
+
+const (
+	tcgets = unix.TIOCGETA
+	tcsets = unix.TIOCSETA
+)
diff --git a/termios_sysv.go b/termios_sysv.go
new file mode 100644
index 0000000..2e9c461
--- /dev/null
+++ b/termios_sysv.go
@@ -0,0 +1,10 @@
+//go:build aix || linux || solaris || zos
+
+package terminal
+
+import "golang.org/x/sys/unix"
+
+const (
+	tcgets = unix.TCGETS
+	tcsets = unix.TCSETS
+)