diff --git a/.bazelversion b/.bazelversion
index 024b066c..bdec8e0d 100644
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +1 @@
-6.2.1
+6.4.0rc2
diff --git a/.github/workflows/bazel.yml b/.github/workflows/bazel.yml
index c8f72a35..492761b7 100644
--- a/.github/workflows/bazel.yml
+++ b/.github/workflows/bazel.yml
@@ -35,7 +35,7 @@ jobs:
   Linux:
     strategy:
       matrix:
-        tag: ['5.4', '5.5', '5.6', '5.7', '5.8']
+        tag: ['5.4', '5.5', '5.6', '5.7', '5.8', '5.9']
     runs-on: ubuntu-latest
     container:
       image: swift:${{ matrix.tag }}-focal
diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index e202bac1..3ef1bc47 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -25,7 +25,7 @@ jobs:
   CMake:
     strategy:
       matrix:
-        xcode_version: ['14.2', '14.3']
+        xcode_version: ['14.2', '14.3', '15.0']
     runs-on: macos-13
     env:
       DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode_version }}.app
@@ -42,7 +42,7 @@ jobs:
   CMake_Linux:
     strategy:
       matrix:
-        tag: ['5.6', '5.7', '5.8']
+        tag: ['5.6', '5.7', '5.8', '5.9']
     runs-on: ubuntu-latest
     container:
       image: swift:${{ matrix.tag }}
diff --git a/.github/workflows/jazzy.yml b/.github/workflows/jazzy.yml
index a271cc67..1c04a156 100644
--- a/.github/workflows/jazzy.yml
+++ b/.github/workflows/jazzy.yml
@@ -23,9 +23,9 @@ on:
 
 jobs:
   Jazzy:
-    runs-on: macos-12
+    runs-on: macos-13
     env:
-      DEVELOPER_DIR: /Applications/Xcode_14.2.app
+      DEVELOPER_DIR: /Applications/Xcode_15.0.app
     steps:
       - uses: actions/checkout@v3
       - name: Install SourceKitten
diff --git a/.github/workflows/swiftlint.yml b/.github/workflows/swiftlint.yml
index 5f892216..95355a16 100644
--- a/.github/workflows/swiftlint.yml
+++ b/.github/workflows/swiftlint.yml
@@ -11,7 +11,7 @@ jobs:
   SwiftLint:
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/realm/swiftlint:0.51.0
+      image: ghcr.io/realm/swiftlint:0.53.0
     steps:
       - uses: actions/checkout@v3
       - name: SwiftLint
diff --git a/.github/workflows/swiftlint_analyze.yml b/.github/workflows/swiftlint_analyze.yml
index 5dda1d50..887e008d 100644
--- a/.github/workflows/swiftlint_analyze.yml
+++ b/.github/workflows/swiftlint_analyze.yml
@@ -23,7 +23,7 @@ jobs:
   Analyze:
     runs-on: macos-13
     env:
-      DEVELOPER_DIR: /Applications/Xcode_14.3.app
+      DEVELOPER_DIR: /Applications/Xcode_15.0.app
     steps:
       - uses: actions/checkout@v3
       - name: Generate xcodebuild.log
diff --git a/.github/workflows/swiftpm.yml b/.github/workflows/swiftpm.yml
index f872afa4..8fd97095 100644
--- a/.github/workflows/swiftpm.yml
+++ b/.github/workflows/swiftpm.yml
@@ -49,8 +49,21 @@ jobs:
       - run: swift -version
       - run: YAMS_DEFAULT_ENCODING=UTF16 swift test --parallel
       - run: YAMS_DEFAULT_ENCODING=UTF8 swift test --parallel
+
+  Xcode_Ventura:
+    strategy:
+      matrix:
+        xcode_version: ['14.3', '15.0']
+    runs-on: macos-13
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode_version }}.app
+    steps:
+      - uses: actions/checkout@v3
+      - run: swift -version
+      - run: YAMS_DEFAULT_ENCODING=UTF16 swift test --parallel
+      - run: YAMS_DEFAULT_ENCODING=UTF8 swift test --parallel
       - name: Code Coverage
-        if: matrix.xcode_version == '14.2'
+        if: matrix.xcode_version == '15.0'
         run: |
           swift test --enable-code-coverage
           xcrun llvm-cov export -format="lcov" .build/debug/YamsPackageTests.xctest/Contents/MacOS/YamsPackageTests -instr-profile .build/debug/codecov/default.profdata > coverage.lcov
@@ -62,7 +75,7 @@ jobs:
   Linux:
     strategy:
       matrix:
-        tag: ['5.4', '5.5', '5.6', '5.7']
+        tag: ['5.4', '5.5', '5.6', '5.7', '5.8', '5.9']
     runs-on: ubuntu-latest
     container:
       image: swift:${{ matrix.tag }}
diff --git a/.github/workflows/xcodebuild.yml b/.github/workflows/xcodebuild.yml
index 2e064f0d..6d16628d 100644
--- a/.github/workflows/xcodebuild.yml
+++ b/.github/workflows/xcodebuild.yml
@@ -93,3 +93,37 @@ jobs:
         if: always()
         run: xcodebuild ${{ matrix.xcode_flags }} build -sdk watchsimulator | xcpretty
         shell: bash
+
+  xcodebuild_Ventura:
+    strategy:
+      matrix:
+        xcode:
+          - version: '14.3'
+          - version: '15.0'
+        xcode_flags: ['-scheme Yams -project Yams.xcodeproj']
+    runs-on: macos-13
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode.version }}.app
+    steps:
+      - uses: actions/checkout@v3
+      - run: xcodebuild -version
+      - name: macOS with UTF16
+        if: always()
+        run: YAMS_DEFAULT_ENCODING=UTF16 xcodebuild ${{ matrix.xcode_flags }} test | xcpretty
+        shell: bash
+      - name: macOS with UTF8
+        if: always()
+        run: YAMS_DEFAULT_ENCODING=UTF8 xcodebuild ${{ matrix.xcode_flags }} test | xcpretty
+        shell: bash
+      - name: iPhone Simulator
+        if: always()
+        run: xcodebuild ${{ matrix.xcode_flags }} test -sdk iphonesimulator -destination "name=iPhone 8" | xcpretty
+        shell: bash
+      - name: Apple TV Simulator
+        if: always()
+        run: xcodebuild ${{ matrix.xcode_flags }} test -sdk appletvsimulator -destination "name=Apple TV 4K (2nd generation)" | xcpretty
+        shell: bash
+      - name: watchOS Simulator
+        if: always()
+        run: xcodebuild ${{ matrix.xcode_flags }} build -sdk watchsimulator | xcpretty
+        shell: bash
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a5aad8bb..4f3ecf92 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,14 @@
 
 ##### Breaking
 
-* None.
+* Change how empty strings are decoded into nullable properties.
+  `key: ""` previously decoded into
+  `struct Value: Codable { let key: String? }` as `Value(key: nil)`
+  whereas after this change it decodes as `Value(key: "")`.
+  This could be a breaking change if you were relying on the previous
+  semantics.  
+  [Liam Nichols](https://github.com/liamnichols)
+  [#301](https://github.com/jpsim/Yams/issues/301)
 
 ##### Enhancements
 
diff --git a/MODULE.bazel b/MODULE.bazel
index e5080cca..be91d0b6 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -4,7 +4,7 @@ module(
     compatibility_level = 1,
 )
 
-bazel_dep(name = "rules_swift", version = "1.8.0", repo_name = "build_bazel_rules_swift")
+bazel_dep(name = "rules_swift", version = "1.12.0", repo_name = "build_bazel_rules_swift")
 
-bazel_dep(name = "platforms", version = "0.0.6", dev_dependency = True)
-bazel_dep(name = "rules_apple", version = "2.3.0", dev_dependency = True)
+bazel_dep(name = "platforms", version = "0.0.7", dev_dependency = True)
+bazel_dep(name = "rules_apple", version = "3.0.0", dev_dependency = True)
diff --git a/Sources/Yams/Constructor.swift b/Sources/Yams/Constructor.swift
index 29aa3c59..41b8a587 100644
--- a/Sources/Yams/Constructor.swift
+++ b/Sources/Yams/Constructor.swift
@@ -396,6 +396,10 @@ extension NSNull/*: ScalarConstructible*/ {
     ///
     /// - returns: An instance of `NSNull`, if one was successfully extracted from the scalar.
     public static func construct(from scalar: Node.Scalar) -> NSNull? {
+        // When constructing from a Scalar, only plain style scalars should be recognized.
+        // For example #"key: 'null'"# or #"key: ''"# should not be considered as null.
+        guard case .plain = scalar.style else { return nil }
+
         switch scalar.string {
         case "", "~", "null", "Null", "NULL":
             return NSNull()
diff --git a/Tests/YamsTests/ConstructorTests.swift b/Tests/YamsTests/ConstructorTests.swift
index a04cc3cb..9f93039a 100644
--- a/Tests/YamsTests/ConstructorTests.swift
+++ b/Tests/YamsTests/ConstructorTests.swift
@@ -210,14 +210,16 @@ class ConstructorTests: XCTestCase { // swiftlint:disable:this type_body_length
             english: null
             ~: null key
             ---
-            # This sequence has five
-            # entries, two have values.
+            # This sequence has seven
+            # entries, four have values.
             sparse:
               - ~
               - 2nd entry
               -
               - 4th entry
               - Null
+              - 'null'
+              - ''
 
             """
         let objects = Array(try Yams.load_all(yaml: example))
@@ -235,7 +237,9 @@ class ConstructorTests: XCTestCase { // swiftlint:disable:this type_body_length
                     "2nd entry",
                     NSNull(),
                     "4th entry",
-                    NSNull()
+                    NSNull(),
+                    "null",
+                    ""
                 ] as [Any]
             ]
         ]
diff --git a/Tests/YamsTests/EncoderTests.swift b/Tests/YamsTests/EncoderTests.swift
index ce6d5d67..2eaa2269 100644
--- a/Tests/YamsTests/EncoderTests.swift
+++ b/Tests/YamsTests/EncoderTests.swift
@@ -590,14 +590,6 @@ private struct Address: Codable, Equatable {
     let zipCode: Int
     let country: String
 
-    init(street: String, city: String, state: String, zipCode: Int, country: String) {
-        self.street = street
-        self.city = city
-        self.state = state
-        self.zipCode = zipCode
-        self.country = country
-    }
-
     static func == (_ lhs: Address, _ rhs: Address) -> Bool {
         return lhs.street == rhs.street &&
             lhs.city == rhs.city &&
@@ -685,11 +677,6 @@ private struct Company: Codable, Equatable {
     let address: Address
     var employees: [Employee]
 
-    init(address: Address, employees: [Employee]) {
-        self.address = address
-        self.employees = employees
-    }
-
     static func == (_ lhs: Company, _ rhs: Company) -> Bool {
         return lhs.address == rhs.address && lhs.employees == rhs.employees
     }
diff --git a/Tests/YamsTests/NodeTests.swift b/Tests/YamsTests/NodeTests.swift
index 5257e0a2..933de986 100644
--- a/Tests/YamsTests/NodeTests.swift
+++ b/Tests/YamsTests/NodeTests.swift
@@ -59,7 +59,7 @@ class NodeTests: XCTestCase {
         let scalarFloat: Node = "1.0"
         XCTAssertEqual(scalarFloat.float, 1.0)
 
-        let scalarNull: Node = "null"
+        let scalarNull = Node("null", .implicit, .plain)
         XCTAssertEqual(scalarNull.null, NSNull())
 
         let scalarInt: Node = "1"
diff --git a/Tests/YamsTests/TopLevelDecoderTests.swift b/Tests/YamsTests/TopLevelDecoderTests.swift
index b6bdd37d..718b1b19 100644
--- a/Tests/YamsTests/TopLevelDecoderTests.swift
+++ b/Tests/YamsTests/TopLevelDecoderTests.swift
@@ -32,5 +32,51 @@ class TopLevelDecoderTests: XCTestCase {
             )
         XCTAssertEqual(foo?.name, "Bird")
     }
+
+    func testDecodeOptionalTypes() throws {
+        let yaml = """
+        AAA: ''
+        BBB:
+        CCC: null
+        DDD: ~
+        EEE: ""
+        json: {
+          "FFF": "",
+          "GGG": "null"
+        }
+        array:
+        - one
+        - ''
+        - null
+        - 'null'
+        - '~'
+        """
+
+        struct Container: Codable, Equatable {
+            struct JSON: Codable, Equatable {
+                var FFF: String?
+                var GGG: String?
+            }
+
+            var AAA: String?
+            var BBB: String?
+            var CCC: Int?
+            var DDD: String?
+            var EEE: String?
+            var json: JSON
+            var array: [String?]
+        }
+
+        let container = try YAMLDecoder().decode(Container.self, from: yaml)
+
+        XCTAssertEqual(container.AAA, "")
+        XCTAssertEqual(container.BBB, nil)
+        XCTAssertEqual(container.CCC, nil)
+        XCTAssertEqual(container.DDD, nil)
+        XCTAssertEqual(container.EEE, "")
+        XCTAssertEqual(container.json.FFF, "")
+        XCTAssertEqual(container.json.GGG, "null")
+        XCTAssertEqual(container.array, ["one", "", nil, "null", "~"])
+    }
 }
 #endif