diff --git a/Sources/SwiftGtkGenCore/Config.swift b/Sources/SwiftGtkGenCore/Config.swift
index c2dfef6..0237d00 100644
--- a/Sources/SwiftGtkGenCore/Config.swift
+++ b/Sources/SwiftGtkGenCore/Config.swift
@@ -474,19 +474,29 @@ public struct IncludeEntry {
 }
 
 extension MonorepoConfig {
-    /// Parses a monorepo TOML config file.
+    /// Parses a monorepo TOML config file using `[packages.Name]` section headers
+    /// (the TOML reader supports `[section]` headers but not `[[array-of-tables]]`).
+    ///
+    /// Example config:
+    /// ```toml
+    /// output_dir = "."
+    ///
+    /// [packages.GLib]
+    /// gir = "/usr/share/gir-1.0/GLib-2.0.gir"
+    ///
+    /// [packages.GObject]
+    /// gir = "/usr/share/gir-1.0/GObject-2.0.gir"
+    /// concurrency = "mainActor"
+    /// ```
     public static func from(toml: [String: Any], defaultOutputDir: String) throws -> MonorepoConfig {
         let outputDir = toml["output_dir"] as? String ?? defaultOutputDir
-        guard let pkgArray = toml["packages"] as? [[String: Any]] else {
-            throw TOMLReaderError.parseError(line: 0, message: "monorepo config missing [[packages]] array")
+        guard let packagesDict = toml["packages"] as? [String: [String: Any]] else {
+            throw TOMLReaderError.parseError(line: 0, message: "monorepo config missing [packages.*] sections")
         }
         var packages: [PackageEntry] = []
-        for (index, pkgDict) in pkgArray.enumerated() {
-            guard let name = pkgDict["name"] as? String else {
-                throw TOMLReaderError.parseError(line: 0, message: "packages[\(index)] missing 'name'")
-            }
+        for (name, pkgDict) in packagesDict.sorted(by: { $0.key < $1.key }) {
             guard let girPath = pkgDict["gir"] as? String else {
-                throw TOMLReaderError.parseError(line: 0, message: "packages[\(index)].\(name) missing 'gir'")
+                throw TOMLReaderError.parseError(line: 0, message: "packages.\(name) missing 'gir'")
             }
             let concurrency = (pkgDict["concurrency"] as? String).flatMap(ConcurrencyModel.init(rawValue:))
             let objects = try parseMonorepoObjectConfigs(from: pkgDict)
diff --git a/Tests/SwiftGtkGenCoreTests/MonorepoConfigTests.swift b/Tests/SwiftGtkGenCoreTests/MonorepoConfigTests.swift
index 410158b..4b2ae07 100644
--- a/Tests/SwiftGtkGenCoreTests/MonorepoConfigTests.swift
+++ b/Tests/SwiftGtkGenCoreTests/MonorepoConfigTests.swift
@@ -8,7 +8,16 @@ struct MonorepoConfigTests {
     @Test func parsesValidMonorepoConfig() throws {
         let toml = """
         output_dir = "."
-        packages = [{ name = "Gtk", gir = "/usr/share/gir-1.0/Gtk-4.0.gir" },{ name = "Gdk", gir = "/usr/share/gir-1.0/Gdk-4.0.gir", concurrency = "mainActor" },{ name = "GObject", gir = "/usr/share/gir-1.0/GObject-2.0.gir" }]
+
+        [packages.Gtk]
+        gir = "/usr/share/gir-1.0/Gtk-4.0.gir"
+
+        [packages.Gdk]
+        gir = "/usr/share/gir-1.0/Gdk-4.0.gir"
+        concurrency = "mainActor"
+
+        [packages.GObject]
+        gir = "/usr/share/gir-1.0/GObject-2.0.gir"
         """
 
         let dict = try TOMLReader.parse(toml)
@@ -16,23 +25,22 @@ struct MonorepoConfigTests {
 
         #expect(config.outputDir == ".")
         #expect(config.packages.count == 3)
-        #expect(config.packages[0].name == "Gtk")
-        #expect(config.packages[0].girPath == "/usr/share/gir-1.0/Gtk-4.0.gir")
+        #expect(config.packages[0].name == "GObject")
+        #expect(config.packages[0].girPath == "/usr/share/gir-1.0/GObject-2.0.gir")
         #expect(config.packages[0].concurrency == nil)
         #expect(config.packages[1].name == "Gdk")
         #expect(config.packages[1].concurrency == .mainActor)
-        #expect(config.packages[2].name == "GObject")
+        #expect(config.packages[2].name == "Gtk")
         #expect(config.packages[2].concurrency == nil)
     }
 
     @Test func parsesPackagesWithObjectOverrides() throws {
         let dict: [String: Any] = [
             "output_dir": "Sources",
-                "packages": [
-                    [
-                        "name": "Gtk",
-                        "gir": "/usr/share/gir-1.0/Gtk-4.0.gir",
-                        "object": [
+            "packages": [
+                "Gtk": [
+                    "gir": "/usr/share/gir-1.0/Gtk-4.0.gir",
+                    "object": [
                         "Gtk.Widget": ["status": "generate", "concurrency": "mainActor"],
                         "Gtk.Legacy": ["status": "ignore"],
                     ],
@@ -60,15 +68,17 @@ struct MonorepoConfigTests {
         }
     }
 
-    @Test func rejectsMissingName() {
+    @Test func rejectsMissingGir() throws {
         let dict: [String: Any] = [
             "packages": [
-                ["gir": "/usr/share/gir-1.0/Gtk-4.0.gir"],
+                "Broken": [
+                    "concurrency": "mainActor",
+                ],
             ],
         ]
         do {
             _ = try MonorepoConfig.from(toml: dict, defaultOutputDir: ".")
-            Issue.record("Expected error for missing name")
+            Issue.record("Expected error for missing gir")
         } catch {
             // Expected
         }
@@ -77,7 +87,7 @@ struct MonorepoConfigTests {
     @Test func usesDefaultOutputDirWhenNotSpecified() throws {
         let dict: [String: Any] = [
             "packages": [
-                ["name": "Gtk", "gir": "/usr/share/gir-1.0/Gtk-4.0.gir"],
+                "Gtk": ["gir": "/usr/share/gir-1.0/Gtk-4.0.gir"],
             ],
         ]
 
@@ -85,4 +95,19 @@ struct MonorepoConfigTests {
 
         #expect(config.outputDir == "/custom/output")
     }
+
+    @Test func preservesSortedOrder() throws {
+        let dict: [String: Any] = [
+            "packages": [
+                "Zeta": ["gir": "/z"],
+                "Alpha": ["gir": "/a"],
+            ],
+        ]
+
+        let config = try MonorepoConfig.from(toml: dict, defaultOutputDir: ".")
+
+        #expect(config.packages.count == 2)
+        #expect(config.packages[0].name == "Alpha")
+        #expect(config.packages[1].name == "Zeta")
+    }
 }
diff --git a/monorepo-config.toml b/monorepo-config.toml
new file mode 100644
index 0000000..58c85ba
--- /dev/null
+++ b/monorepo-config.toml
@@ -0,0 +1,10 @@
+output_dir = "/tmp/monorepo-gen"
+
+[packages.GLib]
+gir = "/usr/share/gir-1.0/GLib-2.0.gir"
+
+[packages.GObject]
+gir = "/usr/share/gir-1.0/GObject-2.0.gir"
+
+[packages.Gio]
+gir = "/usr/share/gir-1.0/Gio-2.0.gir"