diff --git a/.github/workflows/docc.yml b/.github/workflows/docc.yml
index 09b5c56..c1cc6ac 100644
--- a/.github/workflows/docc.yml
+++ b/.github/workflows/docc.yml
@@ -7,14 +7,16 @@ on:
     branches: [ main ]
 
 env:
-  DEVELOPER_DIR: /Applications/Xcode_15.4.app/Contents/Developer
+  DEVELOPER_DIR: /Applications/Xcode_26.3.app/Contents/Developer
 
 jobs:
   docc:
     name: DocC
     runs-on: macos-latest
+    permissions:
+      contents: read
     steps:
     - name: Checkout source
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Build
       run: make docs open="no" DERIVED_DATA_PATH="$(mktemp -d)"
diff --git a/.github/workflows/swift.yml b/.github/workflows/swift.yml
index 1fcadce..24bfd25 100644
--- a/.github/workflows/swift.yml
+++ b/.github/workflows/swift.yml
@@ -7,22 +7,24 @@ on:
     branches: [ main ]
 
 env:
-  DEVELOPER_DIR: /Applications/Xcode_15.4.app/Contents/Developer
+  DEVELOPER_DIR: /Applications/Xcode_26.3.app/Contents/Developer
 
 jobs:
   swift:
     name: Swift
     runs-on: macos-latest
+    permissions:
+      contents: read
     env:
-      SIMULATOR: iPhone 15
+      SIMULATOR: iPhone 17
     steps:
     - name: Checkout source
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Download swiftlint binary
       run: swift package resolve
     - name: Lint
       run: >
-        "$(find ".build/artifacts/swiftlint" -type f -name swiftlint -perm +111 -print -quit)"
+        "$(find ".build/artifacts/swiftlint" -path "*macos*" -type f -name swiftlint -perm +111 -print -quit)"
         lint --strict --reporter github-actions-logging
     - name: Resolve package dependencies
       run: xcodebuild -resolvePackageDependencies
diff --git a/.swiftlint-rules.yml b/.swiftlint-rules.yml
index 58fa60d..2ab21c9 100644
--- a/.swiftlint-rules.yml
+++ b/.swiftlint-rules.yml
@@ -9,8 +9,9 @@ only_rules:
 - accessibility_label_for_image
 - accessibility_trait_for_button
 - anonymous_argument_in_multiline_closure
-- anyobject_protocol
 - array_init
+- async_without_await
+- attribute_name_spacing
 # - attributes
 - balanced_xctest_lifecycle
 - blanket_disable_command
@@ -94,7 +95,6 @@ only_rules:
 - implicitly_unwrapped_optional
 - inclusive_language
 # - indentation_width
-- inert_defer
 - invalid_swiftlint_command
 - is_disjoint
 - joined_default_parameter
@@ -145,6 +145,7 @@ only_rules:
 - opening_brace
 - operator_usage_whitespace
 - operator_whitespace
+- optional_data_string_conversion
 - optional_enum_case_matching
 - orphaned_doc_comment
 - overridden_super_call
@@ -155,6 +156,7 @@ only_rules:
 - prefer_nimble
 - prefer_self_in_static_references
 - prefer_self_type_over_type_of_self
+- prefer_type_checking
 - prefer_zero_over_explicit_init
 # - prefixed_toplevel_constant
 - private_action
@@ -177,6 +179,7 @@ only_rules:
 - redundant_objc_attribute
 - redundant_optional_initialization
 - redundant_self_in_closure
+- redundant_sendable
 - redundant_set_access_control
 # - redundant_string_enum_value
 - redundant_type_annotation
@@ -224,7 +227,6 @@ only_rules:
 - unneeded_synthesized_initializer
 - unowned_variable_capture
 - untyped_error_in_catch
-- unused_capture_list
 - unused_closure_parameter
 - unused_control_flow_label
 - unused_enumerated
diff --git a/Package.resolved b/Package.resolved
index c6f2c5a..ae61d4d 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -1,4 +1,5 @@
 {
+  "originHash" : "81ae40d6906e658da10602e875360b31f6a3b0f943e8e855a7f87a356d5db60a",
   "pins" : [
     {
       "identity" : "collectionconcurrencykit",
@@ -41,8 +42,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/Quick/Nimble.git",
       "state" : {
-        "revision" : "54b4e52183f16fe806014cbfd63718a84f8ba072",
-        "version" : "13.4.0"
+        "revision" : "035b88ad6ae8035f5ce2b50b0a6d69c3b16d2120",
+        "version" : "14.0.0"
       }
     },
     {
@@ -50,8 +51,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/jpsim/SourceKitten.git",
       "state" : {
-        "revision" : "fd4df99170f5e9d7cf9aa8312aa8506e0e7a44e7",
-        "version" : "0.35.0"
+        "revision" : "453f75b8a3bb2c3596c0d2dd422c289788233a22",
+        "version" : "0.37.1"
       }
     },
     {
@@ -68,8 +69,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/swiftlang/swift-syntax.git",
       "state" : {
-        "revision" : "515f79b522918f83483068d99c68daeb5116342d",
-        "version" : "600.0.0-prerelease-2024-08-14"
+        "revision" : "1103c45ece4f7fe160b8f75b4ea1ee2e5fac1841",
+        "version" : "601.0.0"
       }
     },
     {
@@ -77,8 +78,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/realm/SwiftLint.git",
       "state" : {
-        "revision" : "a24488f26e60247d8fff7bbb03d51910af3dc91c",
-        "version" : "0.56.2"
+        "revision" : "625792423014cc49b0a1e5a1a5c0d6b8b3de10f9",
+        "version" : "0.59.1"
       }
     },
     {
@@ -104,10 +105,10 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/jpsim/Yams.git",
       "state" : {
-        "revision" : "3036ba9d69cf1fd04d433527bc339dc0dc75433d",
-        "version" : "5.1.3"
+        "revision" : "3d6871d5b4a5cd519adf233fbb576e0a2af71c17",
+        "version" : "5.4.0"
       }
     }
   ],
-  "version" : 2
+  "version" : 3
 }
diff --git a/Package.swift b/Package.swift
index 7ddadba..2af804c 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,7 +1,13 @@
-// swift-tools-version:5.8
+// swift-tools-version:5.10
 
+import Foundation
 import PackageDescription
 
+let environment = ProcessInfo.processInfo.environment
+
+let treatWarningsAsErrors = environment["CI"] == "true"
+let enableSwiftLintBuildToolPlugin = environment["CODEQL_DIST"] == nil
+
 let package = Package(
     name: "CombineUI",
     platforms: [
@@ -16,10 +22,10 @@ let package = Package(
     dependencies: [
         .package(
             url: "https://github.com/realm/SwiftLint.git",
-            exact: "0.56.2"),
+            exact: "0.59.1"),
         .package(
             url: "https://github.com/Quick/Nimble.git",
-            exact: "13.4.0"),
+            exact: "14.0.0"),
     ],
     targets: [
         .target(
@@ -30,16 +36,26 @@ let package = Package(
                 "CombineUI",
                 "Nimble",
             ]),
-    ]
+    ],
 )
 
 package.targets.forEach { target in
 
-    target.swiftSettings = [
-        .enableExperimentalFeature("StrictConcurrency"),
-    ]
+    // TODO: Remove upon enabling Swift 6 language mode:
+    target.swiftSettings = (target.swiftSettings ?? []) + [.enableExperimentalFeature("StrictConcurrency")]
+
+    if treatWarningsAsErrors {
+        target.swiftSettings = (target.swiftSettings ?? []) + [
+            // TODO: Remove unsafe flag upon upgrading to Swift tools v6.2 and uncomment subsequent settings:
+            .unsafeFlags(["-warnings-as-errors"]),
+//            .treatAllWarnings(as: .error),
+//            .treatWarning("DeprecatedDeclaration", as: .warning),
+        ]
+    }
 
-    target.plugins = [
-        .plugin(name: "SwiftLintBuildToolPlugin", package: "SwiftLint"),
-    ]
+    if enableSwiftLintBuildToolPlugin {
+        target.plugins = (target.plugins ?? []) + [
+            .plugin(name: "SwiftLintBuildToolPlugin", package: "SwiftLint"),
+        ]
+    }
 }
diff --git a/Tests/CombineUITests/BindingTests.swift b/Tests/CombineUITests/BindingTests.swift
index a0eb237..6c0e50e 100644
--- a/Tests/CombineUITests/BindingTests.swift
+++ b/Tests/CombineUITests/BindingTests.swift
@@ -35,7 +35,8 @@ final class BindingTests: XCTestCase {
     func testBinding() {
         let subject: PassthroughSubject<Int, Never> = .init()
         var object: TestObject? = .init()
-        weak var weakObject: TestObject? = object
+        weak var weakObject: TestObject?
+        weakObject = object
         expect(weakObject) != nil
         if let object: TestObject {
             subject