diff --git a/Package.resolved b/Package.resolved
index 8004dceaa5..cdd1e2f110 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -32,8 +32,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/apple/swift-syntax.git",
       "state" : {
-        "revision" : "013a48e2312e57b7b355db25bd3ea75282ebf274",
-        "version" : "0.50900.0-swift-DEVELOPMENT-SNAPSHOT-2023-02-06-a"
+        "revision" : "07c08da983b2815a0acc8e3a477573e4c663b158",
+        "version" : "509.0.0-swift-DEVELOPMENT-SNAPSHOT-2023-03-17-a"
       }
     },
     {
diff --git a/Package.swift b/Package.swift
index 00bd6aeb66..eaa060357b 100644
--- a/Package.swift
+++ b/Package.swift
@@ -31,7 +31,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/apple/swift-argument-parser.git", .upToNextMinor(from: "1.2.1")),
-        .package(url: "https://github.com/apple/swift-syntax.git", exact: "0.50900.0-swift-DEVELOPMENT-SNAPSHOT-2023-02-06-a"),
+        .package(url: "https://github.com/apple/swift-syntax.git", exact: "509.0.0-swift-DEVELOPMENT-SNAPSHOT-2023-03-17-a"),
         .package(url: "https://github.com/jpsim/SourceKitten.git", .upToNextMinor(from: "0.34.1")),
         .package(url: "https://github.com/jpsim/Yams.git", from: "5.0.5"),
         .package(url: "https://github.com/scottrhoyt/SwiftyTextTable.git", from: "0.9.0"),
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitTopLevelACLRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitTopLevelACLRule.swift
index c3ecccb8c7..81804d4af8 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitTopLevelACLRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ExplicitTopLevelACLRule.swift
@@ -83,7 +83,7 @@ private extension ExplicitTopLevelACLRule {
 
         override func visitPost(_ node: VariableDeclSyntax) {
             if hasViolation(modifiers: node.modifiers) {
-                violations.append(node.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+                violations.append(node.bindingKeyword.positionAfterSkippingLeadingTrivia)
             }
         }
 
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyHashingRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyHashingRule.swift
index c0ecc77673..8e06aa9a77 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/LegacyHashingRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/LegacyHashingRule.swift
@@ -85,7 +85,7 @@ extension LegacyHashingRule {
         override func visitPost(_ node: VariableDeclSyntax) {
             guard
                 node.parent?.is(MemberDeclListItemSyntax.self) == true,
-                node.letOrVarKeyword.tokenKind == .keyword(.var),
+                node.bindingKeyword.tokenKind == .keyword(.var),
                 let binding = node.bindings.onlyElement,
                 let identifier = binding.pattern.as(IdentifierPatternSyntax.self),
                 identifier.identifier.text == "hashValue",
@@ -95,7 +95,7 @@ extension LegacyHashingRule {
                 return
             }
 
-            violations.append(node.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+            violations.append(node.bindingKeyword.positionAfterSkippingLeadingTrivia)
         }
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/PatternMatchingKeywordsRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/PatternMatchingKeywordsRule.swift
index b282a40348..35c822faf5 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/PatternMatchingKeywordsRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/PatternMatchingKeywordsRule.swift
@@ -57,12 +57,12 @@ private extension PatternMatchingKeywordsRule {
                 }
 
             guard list.count > 1,
-                let firstLetOrVar = list.first?.letOrVarKeyword.tokenKind else {
+                let firstLetOrVar = list.first?.bindingKeyword.tokenKind else {
                 return
             }
 
             let hasViolation = list.allSatisfy { elem in
-                elem.letOrVarKeyword.tokenKind == firstLetOrVar
+                elem.bindingKeyword.tokenKind == firstLetOrVar
             }
 
             guard hasViolation else {
@@ -70,7 +70,7 @@ private extension PatternMatchingKeywordsRule {
             }
 
             violations.append(contentsOf: list.compactMap { elem in
-                return elem.letOrVarKeyword.positionAfterSkippingLeadingTrivia
+                return elem.bindingKeyword.positionAfterSkippingLeadingTrivia
             })
         }
     }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/RedundantOptionalInitializationRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/RedundantOptionalInitializationRule.swift
index 3a82153708..00cbbb3b58 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/RedundantOptionalInitializationRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/RedundantOptionalInitializationRule.swift
@@ -121,7 +121,7 @@ struct RedundantOptionalInitializationRule: SwiftSyntaxCorrectableRule, Configur
 private extension RedundantOptionalInitializationRule {
     final class Visitor: ViolationsSyntaxVisitor {
         override func visitPost(_ node: VariableDeclSyntax) {
-            guard node.letOrVarKeyword.tokenKind == .keyword(.var),
+            guard node.bindingKeyword.tokenKind == .keyword(.var),
                   !node.modifiers.containsLazy else {
                 return
             }
@@ -141,7 +141,7 @@ private extension RedundantOptionalInitializationRule {
         }
 
         override func visit(_ node: VariableDeclSyntax) -> DeclSyntax {
-            guard node.letOrVarKeyword.tokenKind == .keyword(.var),
+            guard node.bindingKeyword.tokenKind == .keyword(.var),
                   !node.modifiers.containsLazy else {
                 return super.visit(node)
             }
diff --git a/Source/SwiftLintFramework/Rules/Idiomatic/ShorthandOptionalBindingRule.swift b/Source/SwiftLintFramework/Rules/Idiomatic/ShorthandOptionalBindingRule.swift
index 862be34421..1f8b2b2580 100644
--- a/Source/SwiftLintFramework/Rules/Idiomatic/ShorthandOptionalBindingRule.swift
+++ b/Source/SwiftLintFramework/Rules/Idiomatic/ShorthandOptionalBindingRule.swift
@@ -96,7 +96,7 @@ struct ShorthandOptionalBindingRule: OptInRule, SwiftSyntaxCorrectableRule, Conf
 private class Visitor: ViolationsSyntaxVisitor {
     override func visitPost(_ node: OptionalBindingConditionSyntax) {
         if node.isShadowingOptionalBinding {
-            violations.append(node.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+            violations.append(node.bindingKeyword.positionAfterSkippingLeadingTrivia)
         }
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/OverrideInExtensionRule.swift b/Source/SwiftLintFramework/Rules/Lint/OverrideInExtensionRule.swift
index 224191befc..477a86710f 100644
--- a/Source/SwiftLintFramework/Rules/Lint/OverrideInExtensionRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/OverrideInExtensionRule.swift
@@ -61,7 +61,7 @@ private extension OverrideInExtensionRule {
 
         override func visitPost(_ node: VariableDeclSyntax) {
             if node.modifiers.containsOverride {
-                violations.append(node.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+                violations.append(node.bindingKeyword .positionAfterSkippingLeadingTrivia)
             }
         }
 
diff --git a/Source/SwiftLintFramework/Rules/Lint/PrivateOutletRule.swift b/Source/SwiftLintFramework/Rules/Lint/PrivateOutletRule.swift
index eb437b5f25..28eb452484 100644
--- a/Source/SwiftLintFramework/Rules/Lint/PrivateOutletRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/PrivateOutletRule.swift
@@ -105,7 +105,7 @@ private extension PrivateOutletRule {
                 return
             }
 
-            violations.append(decl.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+            violations.append(decl.bindingKeyword.positionAfterSkippingLeadingTrivia)
         }
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Lint/ProhibitedInterfaceBuilderRule.swift b/Source/SwiftLintFramework/Rules/Lint/ProhibitedInterfaceBuilderRule.swift
index d17e56870d..87934e667b 100644
--- a/Source/SwiftLintFramework/Rules/Lint/ProhibitedInterfaceBuilderRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/ProhibitedInterfaceBuilderRule.swift
@@ -29,7 +29,7 @@ private extension ProhibitedInterfaceBuilderRule {
     final class Visitor: ViolationsSyntaxVisitor {
         override func visitPost(_ node: VariableDeclSyntax) {
             if node.isIBOutlet {
-                violations.append(node.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+                violations.append(node.bindingKeyword.positionAfterSkippingLeadingTrivia)
             }
         }
 
diff --git a/Source/SwiftLintFramework/Rules/Lint/SelfInPropertyInitializationRule.swift b/Source/SwiftLintFramework/Rules/Lint/SelfInPropertyInitializationRule.swift
index 334d3e0f46..11ecb111c0 100644
--- a/Source/SwiftLintFramework/Rules/Lint/SelfInPropertyInitializationRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/SelfInPropertyInitializationRule.swift
@@ -114,7 +114,7 @@ private extension SelfInPropertyInitializationRule {
                     continue
                 }
 
-                violations.append(node.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+                violations.append(node.bindingKeyword.positionAfterSkippingLeadingTrivia)
             }
         }
     }
diff --git a/Source/SwiftLintFramework/Rules/Lint/TestCaseAccessibilityRule.swift b/Source/SwiftLintFramework/Rules/Lint/TestCaseAccessibilityRule.swift
index 25d1497766..372a68a14b 100644
--- a/Source/SwiftLintFramework/Rules/Lint/TestCaseAccessibilityRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/TestCaseAccessibilityRule.swift
@@ -82,7 +82,7 @@ private extension TestCaseAccessibilityRule {
                     continue
                 }
 
-                violations.append(node.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+                violations.append(node.bindingKeyword.positionAfterSkippingLeadingTrivia)
                 return
             }
         }
diff --git a/Source/SwiftLintFramework/Rules/Lint/ValidIBInspectableRule.swift b/Source/SwiftLintFramework/Rules/Lint/ValidIBInspectableRule.swift
index 3d24f196fa..eceba9752f 100644
--- a/Source/SwiftLintFramework/Rules/Lint/ValidIBInspectableRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/ValidIBInspectableRule.swift
@@ -162,7 +162,7 @@ private extension ValidIBInspectableRule {
 
         override func visitPost(_ node: VariableDeclSyntax) {
             if node.isInstanceVariable, node.isIBInspectable, node.hasViolation {
-                violations.append(node.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+                violations.append(node.bindingKeyword.positionAfterSkippingLeadingTrivia)
             }
         }
     }
@@ -178,7 +178,7 @@ private extension VariableDeclSyntax {
     }
 
     var isReadOnlyProperty: Bool {
-        if letOrVarKeyword.tokenKind == .keyword(.let) {
+        if bindingKeyword.tokenKind == .keyword(.let) {
             return true
         }
 
diff --git a/Source/SwiftLintFramework/Rules/Lint/WeakDelegateRule.swift b/Source/SwiftLintFramework/Rules/Lint/WeakDelegateRule.swift
index 3e50e20067..5eaae71ec9 100644
--- a/Source/SwiftLintFramework/Rules/Lint/WeakDelegateRule.swift
+++ b/Source/SwiftLintFramework/Rules/Lint/WeakDelegateRule.swift
@@ -90,7 +90,7 @@ private extension WeakDelegateRule {
                 return
             }
 
-            violations.append(node.letOrVarKeyword.positionAfterSkippingLeadingTrivia)
+            violations.append(node.bindingKeyword.positionAfterSkippingLeadingTrivia)
         }
     }
 }
diff --git a/Source/SwiftLintFramework/Rules/Style/AttributesRule.swift b/Source/SwiftLintFramework/Rules/Style/AttributesRule.swift
index 63c2646728..4e7e940919 100644
--- a/Source/SwiftLintFramework/Rules/Style/AttributesRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/AttributesRule.swift
@@ -210,7 +210,7 @@ private extension AttributeListSyntax {
         } else if let importTok = parent.as(ImportDeclSyntax.self)?.importTok {
             keyword = importTok
             shouldBeOnSameLine = true
-        } else if let letOrVarKeyword = parent.as(VariableDeclSyntax.self)?.letOrVarKeyword {
+        } else if let letOrVarKeyword = parent.as(VariableDeclSyntax.self)?.bindingKeyword {
             keyword = letOrVarKeyword
             shouldBeOnSameLine = true
         } else {
diff --git a/Source/SwiftLintFramework/Rules/Style/PrefixedTopLevelConstantRule.swift b/Source/SwiftLintFramework/Rules/Style/PrefixedTopLevelConstantRule.swift
index f1e1498188..f94159c6dd 100644
--- a/Source/SwiftLintFramework/Rules/Style/PrefixedTopLevelConstantRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/PrefixedTopLevelConstantRule.swift
@@ -87,7 +87,7 @@ private extension PrefixedTopLevelConstantRule {
         override var skippableDeclarations: [DeclSyntaxProtocol.Type] { .all }
 
         override func visitPost(_ node: VariableDeclSyntax) {
-            guard node.letOrVarKeyword.tokenKind == .keyword(.let) else {
+            guard node.bindingKeyword.tokenKind == .keyword(.let) else {
                 return
             }
 
diff --git a/Source/SwiftLintFramework/Rules/Style/RedundantDiscardableLetRule.swift b/Source/SwiftLintFramework/Rules/Style/RedundantDiscardableLetRule.swift
index 53f0664899..e5979838a1 100644
--- a/Source/SwiftLintFramework/Rules/Style/RedundantDiscardableLetRule.swift
+++ b/Source/SwiftLintFramework/Rules/Style/RedundantDiscardableLetRule.swift
@@ -69,8 +69,8 @@ private extension RedundantDiscardableLetRule {
 
             correctionPositions.append(node.positionAfterSkippingLeadingTrivia)
             let newNode = node
-                .with(\.letOrVarKeyword, .keyword(.let, presence: .missing))
-                .with(\.bindings, node.bindings.with(\.leadingTrivia, node.letOrVarKeyword.leadingTrivia))
+                .with(\.bindingKeyword, .keyword(.let, presence: .missing))
+                .with(\.bindings, node.bindings.with(\.leadingTrivia, node.bindingKeyword.leadingTrivia))
             return super.visit(newNode)
         }
     }
@@ -78,7 +78,7 @@ private extension RedundantDiscardableLetRule {
 
 private extension VariableDeclSyntax {
     var hasRedundantDiscardableLetViolation: Bool {
-        letOrVarKeyword.tokenKind == .keyword(.let) &&
+        bindingKeyword.tokenKind == .keyword(.let) &&
             bindings.count == 1 &&
             bindings.first!.pattern.is(WildcardPatternSyntax.self) &&
             bindings.first!.typeAnnotation == nil &&
diff --git a/bazel/repos.bzl b/bazel/repos.bzl
index 5a9485f7af..1e64de0526 100644
--- a/bazel/repos.bzl
+++ b/bazel/repos.bzl
@@ -20,10 +20,10 @@ def swiftlint_repos(bzlmod = False):
 
     http_archive(
         name = "com_github_apple_swift_syntax",
-        sha256 = "ef9701634ad34e2dd08a2cd85bb5437af17512175bf6b4623c7d2d28068b6786", # SwiftSyntax sha256
+        sha256 = "0698b10d5784bc91fc60cd740f8c16dbe7debcea67759fdf293bb1c8bdb6eedc", # SwiftSyntax sha256
         build_file = "@SwiftLint//bazel:SwiftSyntax.BUILD",
-        strip_prefix = "swift-syntax-0.50900.0-swift-DEVELOPMENT-SNAPSHOT-2023-02-06-a",
-        url = "https://github.com/apple/swift-syntax/archive/refs/tags/0.50900.0-swift-DEVELOPMENT-SNAPSHOT-2023-02-06-a.tar.gz",
+        strip_prefix = "swift-syntax-509.0.0-swift-DEVELOPMENT-SNAPSHOT-2023-03-17-a",
+        url = "https://github.com/apple/swift-syntax/archive/refs/tags/509.0.0-swift-DEVELOPMENT-SNAPSHOT-2023-03-17-a.tar.gz",
     )
 
     http_archive(