diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 526c754..cb393e0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,14 +12,14 @@ on:
 
 jobs:
   macos:
-    runs-on: macOS-latest
+    runs-on: macOS-13
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
       with:
         fetch-depth: 1
     - name: SPM tests
-      run: swift test --enable-code-coverage --sanitize=thread
+      run: swift test --enable-code-coverage
     - name: Convert coverage files
       run: |
         xcrun llvm-cov export -format "lcov" \
@@ -27,7 +27,7 @@ jobs:
           -ignore-filename-regex="\/Tests\/" \
           -instr-profile=.build/debug/codecov/default.profdata > info.lcov
     - name: Upload to codecov.io
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v4
       with:
         file: info.lcov
 
@@ -36,14 +36,15 @@ jobs:
     strategy:
       matrix:
         tag:
-          - swift:5.6
-          - swift:5.7
           - swift:5.8
+          - swift:5.9
+          - swift:5.10
+          - swiftlang/swift:nightly-6.0-jammy
     container:
       image: ${{ matrix.tag }}
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
       with:
         fetch-depth: 1
     - name: Test
@@ -55,6 +56,6 @@ jobs:
           -ignore-filename-regex="\/Tests\/" \
           -instr-profile .build/debug/codecov/default.profdata > info.lcov
     - name: Upload to codecov.io
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v4
       with:
         file: info.lcov
diff --git a/.gitignore b/.gitignore
index 9365cec..81cda61 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 /.build
 /.swiftpm
 /.vscode
+/.devcontainer
 /Packages
 /*.xcodeproj
 /docs
diff --git a/Sources/JMESPath/Variable.swift b/Sources/JMESPath/Variable.swift
index 5e10f94..b4863b3 100644
--- a/Sources/JMESPath/Variable.swift
+++ b/Sources/JMESPath/Variable.swift
@@ -1,4 +1,3 @@
-import CoreFoundation
 import Foundation
 
 public typealias JMESArray = [Any]
@@ -27,7 +26,7 @@ public enum JMESVariable {
         case let number as NSNumber:
             // both booleans and integer/float point types can be converted to a `NSNumber`
             // We have to check to see the type id to see if it is a boolean
-            if CFGetTypeID(number) == CFBooleanGetTypeID() {
+            if type(of: number) == Self.nsNumberBoolType {
                 self = .boolean(number.boolValue)
             } else {
                 self = .number(number)
@@ -56,7 +55,9 @@ public enum JMESVariable {
             case .dictionary:
                 var object: JMESObject = [:]
                 var index: Int = 0
-                while let key = mirror.descendant(index, "key") as? String, let value = mirror.descendant(index, "value") {
+                while let key = mirror.descendant(index, "key") as? String,
+                    let value = mirror.descendant(index, "value")
+                {
                     object[key] = Self.unwrap(value) ?? NSNull()
                     index += 1
                 }
@@ -115,12 +116,18 @@ public enum JMESVariable {
         case .boolean(let bool):
             return String(describing: bool)
         case .array(let array):
-            guard let jsonData = try? JSONSerialization.data(withJSONObject: array, options: [.fragmentsAllowed]) else {
+            guard
+                let jsonData = try? JSONSerialization.data(
+                    withJSONObject: array, options: [.fragmentsAllowed])
+            else {
                 return nil
             }
             return String(decoding: jsonData, as: Unicode.UTF8.self)
         case .object(let object):
-            guard let jsonData = try? JSONSerialization.data(withJSONObject: object, options: [.fragmentsAllowed]) else {
+            guard
+                let jsonData = try? JSONSerialization.data(
+                    withJSONObject: object, options: [.fragmentsAllowed])
+            else {
                 return nil
             }
             return String(decoding: jsonData, as: Unicode.UTF8.self)
@@ -148,12 +155,12 @@ public enum JMESVariable {
     public func isSameType(as variable: JMESVariable) -> Bool {
         switch (self, variable) {
         case (.null, .null),
-             (.string, .string),
-             (.boolean, .boolean),
-             (.number, .number),
-             (.array, .array),
-             (.object, .object),
-             (.expRef, .expRef):
+            (.string, .string),
+            (.boolean, .boolean),
+            (.number, .number),
+            (.array, .array),
+            (.object, .object),
+            (.expRef, .expRef):
             return true
         default:
             return false
@@ -259,6 +266,8 @@ public enum JMESVariable {
         guard let first = mirror.children.first else { return nil }
         return first.value
     }
+
+    fileprivate static var nsNumberBoolType = type(of: NSNumber(value: true))
 }
 
 extension JMESVariable: Equatable {
@@ -304,7 +313,9 @@ extension JMESObject {
     fileprivate func equalTo(_ rhs: JMESObject) -> Bool {
         guard self.count == rhs.count else { return false }
         for element in self {
-            guard let rhsValue = rhs[element.key], JMESVariable(from: rhsValue) == JMESVariable(from: element.value) else {
+            guard let rhsValue = rhs[element.key],
+                JMESVariable(from: rhsValue) == JMESVariable(from: element.value)
+            else {
                 return false
             }
         }
diff --git a/Tests/JMESPathTests/ComplianceTests.swift b/Tests/JMESPathTests/ComplianceTests.swift
index e2ed76a..1542891 100644
--- a/Tests/JMESPathTests/ComplianceTests.swift
+++ b/Tests/JMESPathTests/ComplianceTests.swift
@@ -6,13 +6,13 @@
 //
 
 import Foundation
+import XCTest
+
+@testable import JMESPath
 
-import Foundation
 #if os(Linux)
-import FoundationNetworking
+    import FoundationNetworking
 #endif
-@testable import JMESPath
-import XCTest
 
 public struct AnyDecodable: Decodable {
     public let value: Any
@@ -22,8 +22,8 @@ public struct AnyDecodable: Decodable {
     }
 }
 
-public extension AnyDecodable {
-    init(from decoder: Decoder) throws {
+extension AnyDecodable {
+    public init(from decoder: Decoder) throws {
         let container = try decoder.singleValueContainer()
 
         if container.decodeNil() {
@@ -43,7 +43,8 @@ public extension AnyDecodable {
         } else if let dictionary = try? container.decode([String: AnyDecodable].self) {
             self.init(dictionary.mapValues { $0.value })
         } else {
-            throw DecodingError.dataCorruptedError(in: container, debugDescription: "AnyDecodable value cannot be decoded")
+            throw DecodingError.dataCorruptedError(
+                in: container, debugDescription: "AnyDecodable value cannot be decoded")
         }
     }
 }
@@ -67,7 +68,7 @@ final class ComplianceTests: XCTestCase {
         @available(iOS 11.0, tvOS 11.0, watchOS 5.0, *)
         func run() throws {
             for c in self.cases {
-                if let _ = c.bench {
+                if c.bench != nil {
                     self.testBenchmark(c)
                 } else if let error = c.error {
                     self.testError(c, error: error)
@@ -106,11 +107,13 @@ final class ComplianceTests: XCTestCase {
                 let expression = try JMESExpression.compile(c.expression)
 
                 let resultJson: String? = try result.map {
-                    let data = try JSONSerialization.data(withJSONObject: $0, options: [.fragmentsAllowed, .sortedKeys])
+                    let data = try JSONSerialization.data(
+                        withJSONObject: $0, options: [.fragmentsAllowed, .sortedKeys])
                     return String(decoding: data, as: Unicode.UTF8.self)
                 }
                 if let value = try expression.search(object: self.given.value) {
-                    let valueData = try JSONSerialization.data(withJSONObject: value, options: [.fragmentsAllowed, .sortedKeys])
+                    let valueData = try JSONSerialization.data(
+                        withJSONObject: value, options: [.fragmentsAllowed, .sortedKeys])
                     let valueJson = String(decoding: valueData, as: Unicode.UTF8.self)
                     XCTAssertEqual(resultJson, valueJson)
                 } else {
@@ -124,7 +127,8 @@ final class ComplianceTests: XCTestCase {
         @available(iOS 11.0, tvOS 11.0, watchOS 5.0, *)
         func output(_ c: Case, expected: String?, result: String?) {
             if expected != result {
-                let data = try! JSONSerialization.data(withJSONObject: self.given.value, options: [.fragmentsAllowed, .sortedKeys])
+                let data = try! JSONSerialization.data(
+                    withJSONObject: self.given.value, options: [.fragmentsAllowed, .sortedKeys])
                 let givenJson = String(decoding: data, as: Unicode.UTF8.self)
                 if let comment = c.comment {
                     print("Comment: \(comment)")
@@ -137,13 +141,20 @@ final class ComplianceTests: XCTestCase {
         }
     }
 
-    func testCompliance(name: String, ignoring: [String] = []) throws {
-        let url = URL(string: "https://raw.githubusercontent.com/jmespath/jmespath.test/master/tests/\(name).json")!
-        try testCompliance(url: url, ignoring: ignoring)
+    func testCompliance(name: String, ignoring: [String] = []) async throws {
+        let url = URL(
+            string:
+                "https://raw.githubusercontent.com/jmespath/jmespath.test/master/tests/\(name).json"
+        )!
+        try await testCompliance(url: url, ignoring: ignoring)
     }
 
-    func testCompliance(url: URL, ignoring: [String] = []) throws {
-        let data = try Data(contentsOf: url)
+    func testCompliance(url: URL, ignoring: [String] = []) async throws {
+        #if compiler(>=6.0)
+            let (data, _) = try await URLSession.shared.data(from: url, delegate: nil)
+        #else
+            let data = try Data(contentsOf: url)
+        #endif
         let tests = try JSONDecoder().decode([ComplianceTest].self, from: data)
 
         if #available(iOS 11.0, tvOS 11.0, watchOS 5.0, *) {
@@ -153,67 +164,67 @@ final class ComplianceTests: XCTestCase {
         }
     }
 
-    func testBasic() throws {
-        try self.testCompliance(name: "basic")
+    func testBasic() async throws {
+        try await self.testCompliance(name: "basic")
     }
 
-    func testBenchmarks() throws {
-        try self.testCompliance(name: "benchmarks")
+    func testBenchmarks() async throws {
+        try await self.testCompliance(name: "benchmarks")
     }
 
-    func testBoolean() throws {
-        try self.testCompliance(name: "boolean")
+    func testBoolean() async throws {
+        try await self.testCompliance(name: "boolean")
     }
 
-    func testCurrent() throws {
-        try self.testCompliance(name: "current")
+    func testCurrent() async throws {
+        try await self.testCompliance(name: "current")
     }
 
-    func testEscape() throws {
-        try self.testCompliance(name: "escape")
+    func testEscape() async throws {
+        try await self.testCompliance(name: "escape")
     }
 
-    func testFilters() throws {
-        try self.testCompliance(name: "filters")
+    func testFilters() async throws {
+        try await self.testCompliance(name: "filters")
     }
 
-    func testFunctions() throws {
-        try self.testCompliance(name: "functions")
+    func testFunctions() async throws {
+        try await self.testCompliance(name: "functions")
     }
 
-    func testIdentifiers() throws {
-        try self.testCompliance(name: "identifiers")
+    func testIdentifiers() async throws {
+        try await self.testCompliance(name: "identifiers")
     }
 
-    func testIndices() throws {
-        try self.testCompliance(name: "indices")
+    func testIndices() async throws {
+        try await self.testCompliance(name: "indices")
     }
 
-    func testLiteral() throws {
-        try self.testCompliance(name: "literal")
+    func testLiteral() async throws {
+        try await self.testCompliance(name: "literal")
     }
 
-    func testMultiSelect() throws {
-        try self.testCompliance(name: "multiselect")
+    func testMultiSelect() async throws {
+        try await self.testCompliance(name: "multiselect")
     }
 
-    func testPipe() throws {
-        try self.testCompliance(name: "pipe")
+    func testPipe() async throws {
+        try await self.testCompliance(name: "pipe")
     }
 
-    func testSlice() throws {
-        try self.testCompliance(name: "slice")
+    func testSlice() async throws {
+        try await self.testCompliance(name: "slice")
     }
 
-    func testSyntax() throws {
-        try self.testCompliance(name: "syntax")
+    func testSyntax() async throws {
+        try await self.testCompliance(name: "syntax")
     }
 
-    func testUnicode() throws {
-        try self.testCompliance(name: "unicode")
+    func testUnicode() async throws {
+        try await self.testCompliance(name: "unicode")
     }
 
-    func testWildcards() throws {
-        try self.testCompliance(name: "wildcard")
+    func testWildcards() async throws {
+        try await self.testCompliance(name: "wildcard")
     }
 }