diff --git a/internal/rosa/all.go b/internal/rosa/all.go
index 6cf1cb96..2c0b01d2 100644
--- a/internal/rosa/all.go
+++ b/internal/rosa/all.go
@@ -75,6 +75,7 @@ const (
 	LIT
 	LibX11
 	LibXau
+	LibXext
 	Libbsd
 	Libcap
 	Libdrm
diff --git a/internal/rosa/x.go b/internal/rosa/x.go
index 11751b1c..16ad27ef 100644
--- a/internal/rosa/x.go
+++ b/internal/rosa/x.go
@@ -171,6 +171,43 @@ func init() {
 	}
 }
 
+func (t Toolchain) newLibXext() (pkg.Artifact, string) {
+	const (
+		version  = "1.3.7"
+		checksum = "-0wvUDaucLPLNOrK1pcKhHNoO-5nUqQyyw6JAbhx65gRjuMiNKKaF2_tcrbC_KNq"
+	)
+	return t.NewPackage("libXext", version, newFromGitLab(
+		"gitlab.freedesktop.org",
+		"xorg/lib/libxext",
+		"libXext-"+version,
+		checksum,
+	), nil, &MakeHelper{
+		Generate: "NOCONFIGURE=1 ./autogen.sh",
+	},
+		Automake,
+		Libtool,
+		PkgConfig,
+
+		utilMacros,
+		LibX11,
+	), version
+}
+func init() {
+	artifactsM[LibXext] = Metadata{
+		f: Toolchain.newLibXext,
+
+		Name:        "libXext",
+		Description: "Xlib-based library for common extensions to the X11 protocol",
+		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxext",
+
+		Dependencies: P{
+			LibX11,
+		},
+
+		ID: 1774,
+	}
+}
+
 func (t Toolchain) newLibpciaccess() (pkg.Artifact, string) {
 	const (
 		version  = "0.19"