diff --git a/Package.resolved b/Package.resolved
index ddf0806..47ffd1e 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -5,17 +5,17 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/pointfreeco/swift-snapshot-testing",
       "state" : {
-        "revision" : "59b663f68e69f27a87b45de48cb63264b8194605",
-        "version" : "1.15.1"
+        "revision" : "5b0c434778f2c1a4c9b5ebdb8682b28e84dd69bd",
+        "version" : "1.15.4"
       }
     },
     {
       "identity" : "swift-syntax",
       "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-syntax.git",
+      "location" : "https://github.com/apple/swift-syntax",
       "state" : {
-        "revision" : "6ad4ea24b01559dde0773e3d091f1b9e36175036",
-        "version" : "509.0.2"
+        "revision" : "08a2f0a9a30e0f705f79c9cfaca1f68b71bdc775",
+        "version" : "510.0.0"
       }
     }
   ],
diff --git a/Package.swift b/Package.swift
index 4cc1daa..954d787 100644
--- a/Package.swift
+++ b/Package.swift
@@ -17,7 +17,7 @@ let package = Package(
     )
   ],
   dependencies: [
-    .package(url: "https://github.com/apple/swift-syntax.git", from: "509.0.0"),
+    .package(url: "https://github.com/apple/swift-syntax", "509.0.0"..<"511.0.0"),
     .package(url: "https://github.com/pointfreeco/swift-snapshot-testing", from: "1.15.0"),
   ],
   targets: [
diff --git a/Tests/MacroTestingTests/DictionaryStorageMacroTests.swift b/Tests/MacroTestingTests/DictionaryStorageMacroTests.swift
index 2483154..c1f5d19 100644
--- a/Tests/MacroTestingTests/DictionaryStorageMacroTests.swift
+++ b/Tests/MacroTestingTests/DictionaryStorageMacroTests.swift
@@ -25,7 +25,7 @@ final class DictionaryStorageMacroTests: BaseTestCase {
     } expansion: {
       """
       struct Point {
-        var x: Int = 1 {
+        var x: Int {
           get {
             _storage["x", default: 1] as! Int
           }
@@ -33,7 +33,7 @@ final class DictionaryStorageMacroTests: BaseTestCase {
             _storage["x"] = newValue
           }
         }
-        var y: Int = 2 {
+        var y: Int {
           get {
             _storage["y", default: 2] as! Int
           }
diff --git a/Tests/MacroTestingTests/MacroExamples/AddBlocker.swift b/Tests/MacroTestingTests/MacroExamples/AddBlocker.swift
index 0bffb04..9778ef5 100644
--- a/Tests/MacroTestingTests/MacroExamples/AddBlocker.swift
+++ b/Tests/MacroTestingTests/MacroExamples/AddBlocker.swift
@@ -93,6 +93,6 @@ public struct AddBlocker: ExpressionMacro {
       context.diagnose(diag)
     }
 
-    return result.asProtocol(FreestandingMacroExpansionSyntax.self)!.argumentList.first!.expression
+    return result.asProtocol(FreestandingMacroExpansionSyntax.self)!.arguments.first!.expression
   }
 }
diff --git a/Tests/MacroTestingTests/MacroExamples/FontLiteralMacro.swift b/Tests/MacroTestingTests/MacroExamples/FontLiteralMacro.swift
index 52fcd75..8afbad6 100644
--- a/Tests/MacroTestingTests/MacroExamples/FontLiteralMacro.swift
+++ b/Tests/MacroTestingTests/MacroExamples/FontLiteralMacro.swift
@@ -22,7 +22,7 @@ public enum FontLiteralMacro: ExpressionMacro {
     in context: some MacroExpansionContext
   ) throws -> ExprSyntax {
     let argList = replaceFirstLabel(
-      of: node.argumentList,
+      of: node.arguments,
       with: "fontLiteralName"
     )
     return ".init(\(argList))"
diff --git a/Tests/MacroTestingTests/MacroExamples/StringifyMacro.swift b/Tests/MacroTestingTests/MacroExamples/StringifyMacro.swift
index e351b6b..5d0d7c8 100644
--- a/Tests/MacroTestingTests/MacroExamples/StringifyMacro.swift
+++ b/Tests/MacroTestingTests/MacroExamples/StringifyMacro.swift
@@ -28,7 +28,7 @@ public enum StringifyMacro: ExpressionMacro {
     of node: some FreestandingMacroExpansionSyntax,
     in context: some MacroExpansionContext
   ) -> ExprSyntax {
-    guard let argument = node.argumentList.first?.expression else {
+    guard let argument = node.arguments.first?.expression else {
       fatalError("compiler bug: the macro does not have any arguments")
     }
 
diff --git a/Tests/MacroTestingTests/MacroExamples/URLMacro.swift b/Tests/MacroTestingTests/MacroExamples/URLMacro.swift
index 44054a2..5b5ccf8 100644
--- a/Tests/MacroTestingTests/MacroExamples/URLMacro.swift
+++ b/Tests/MacroTestingTests/MacroExamples/URLMacro.swift
@@ -21,7 +21,7 @@ public enum URLMacro: ExpressionMacro {
     of node: some FreestandingMacroExpansionSyntax,
     in context: some MacroExpansionContext
   ) throws -> ExprSyntax {
-    guard let argument = node.argumentList.first?.expression,
+    guard let argument = node.arguments.first?.expression,
       let segments = argument.as(StringLiteralExprSyntax.self)?.segments,
       segments.count == 1,
       case .stringSegment(let literalSegment)? = segments.first
diff --git a/Tests/MacroTestingTests/MacroExamples/WarningMacro.swift b/Tests/MacroTestingTests/MacroExamples/WarningMacro.swift
index 35a0c9d..9f2163c 100644
--- a/Tests/MacroTestingTests/MacroExamples/WarningMacro.swift
+++ b/Tests/MacroTestingTests/MacroExamples/WarningMacro.swift
@@ -21,7 +21,7 @@ public enum WarningMacro: ExpressionMacro {
     of node: some FreestandingMacroExpansionSyntax,
     in context: some MacroExpansionContext
   ) throws -> ExprSyntax {
-    guard let firstElement = node.argumentList.first,
+    guard let firstElement = node.arguments.first,
       let stringLiteral = firstElement.expression
         .as(StringLiteralExprSyntax.self),
       stringLiteral.segments.count == 1,
diff --git a/Tests/MacroTestingTests/ObservableMacroTests.swift b/Tests/MacroTestingTests/ObservableMacroTests.swift
index 982e6b2..220b2ea 100644
--- a/Tests/MacroTestingTests/ObservableMacroTests.swift
+++ b/Tests/MacroTestingTests/ObservableMacroTests.swift
@@ -70,7 +70,7 @@ final class ObservableMacroTests: XCTestCase {
           }
         }
 
-        var isHappy: Bool = true {
+        var isHappy: Bool {
           get {
             _registrar.beginAccess(\.isHappy)
             defer {