diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 621ab0a2..2ce127b8 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -8,45 +8,84 @@ on:
 permissions:
   contents: read
 jobs:
-  build-connect-library:
-    runs-on: macos-13
-    steps:
-      - uses: actions/checkout@v4
-      - name: Select Xcode version
-        # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md#xcode
-        run: sudo xcode-select --switch /Applications/Xcode_15.0.app
-      - name: Build Connect library
-        run: make buildpackage
   build-eliza-cocoapods-example:
     runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
       - name: Select Xcode version
-        # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md#xcode
-        run: sudo xcode-select --switch /Applications/Xcode_15.0.app
+        # https://github.com/actions/runner-images/releases/tag/macos-13%2F20231218.2
+        run: sudo xcode-select --switch /Applications/Xcode_15.1.app
+      - name: Install xcbeautify
+        run: brew install xcbeautify
       - name: Build Eliza CocoaPods example
         run: |
           cd Examples/ElizaCocoaPodsApp
           pod install
-          xcodebuild -workspace ElizaCocoaPodsApp.xcworkspace -scheme ElizaCocoaPodsApp build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO
+          set -o pipefail && xcodebuild -workspace ElizaCocoaPodsApp.xcworkspace -scheme ElizaCocoaPodsApp build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO | xcbeautify
   build-eliza-swiftpm-example:
     runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
       - name: Select Xcode version
-        # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md#xcode
-        run: sudo xcode-select --switch /Applications/Xcode_15.0.app
+        # https://github.com/actions/runner-images/releases/tag/macos-13%2F20231218.2
+        run: sudo xcode-select --switch /Applications/Xcode_15.1.app
+      - name: Install xcbeautify
+        run: brew install xcbeautify
       - name: Build Eliza Swift PM example
         run: |
           cd Examples/ElizaSwiftPackageApp
-          xcodebuild -scheme ElizaSwiftPackageApp build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO
+          set -o pipefail && xcodebuild -scheme ElizaSwiftPackageApp build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO | xcbeautify
+  build-library-ios:
+    runs-on: macos-13
+    steps:
+      - uses: actions/checkout@v4
+      - name: Select Xcode version
+        # https://github.com/actions/runner-images/releases/tag/macos-13%2F20231218.2
+        run: sudo xcode-select --switch /Applications/Xcode_15.1.app
+      - name: Install xcbeautify
+        run: brew install xcbeautify
+      - name: Build Connect iOS library
+        run: set -o pipefail && xcodebuild -scheme Connect-Package -destination 'platform=iOS Simulator,name=iPhone 15,OS=17.2' | xcbeautify
+  build-library-macos:
+    runs-on: macos-13
+    steps:
+      - uses: actions/checkout@v4
+      - name: Select Xcode version
+        # https://github.com/actions/runner-images/releases/tag/macos-13%2F20231218.2
+        run: sudo xcode-select --switch /Applications/Xcode_15.1.app
+      - name: Install xcbeautify
+        run: brew install xcbeautify
+      - name: Build Connect macOS library
+        run: set -o pipefail && xcodebuild -scheme Connect-Package -destination 'platform=macOS' | xcbeautify
+  build-library-tvos:
+    runs-on: macos-13
+    steps:
+      - uses: actions/checkout@v4
+      - name: Select Xcode version
+        # https://github.com/actions/runner-images/releases/tag/macos-13%2F20231218.2
+        run: sudo xcode-select --switch /Applications/Xcode_15.1.app
+      - name: Install xcbeautify
+        run: brew install xcbeautify
+      - name: Build Connect tvOS library
+        run: set -o pipefail && xcodebuild -scheme Connect-Package -destination 'platform=tvOS Simulator,name=Apple TV,OS=17.2' | xcbeautify
+  build-library-watchos:
+    runs-on: macos-13
+    steps:
+      - uses: actions/checkout@v4
+      - name: Select Xcode version
+        # https://github.com/actions/runner-images/releases/tag/macos-13%2F20231218.2
+        run: sudo xcode-select --switch /Applications/Xcode_15.1.app
+      - name: Install xcbeautify
+        run: brew install xcbeautify
+      - name: Build Connect watchOS library
+        run: set -o pipefail && xcodebuild -scheme Connect-Package -destination 'platform=watchOS Simulator,name=Apple Watch Series 9 (45mm),OS=10.2' | xcbeautify
   build-plugin-and-generate:
     runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
       - name: Select Xcode version
-        # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md#xcode
-        run: sudo xcode-select --switch /Applications/Xcode_15.0.app
+        # https://github.com/actions/runner-images/releases/tag/macos-13%2F20231218.2
+        run: sudo xcode-select --switch /Applications/Xcode_15.1.app
       - uses: bufbuild/buf-setup-action@v1.28.1
         with:
           github_token: ${{ github.token }}
@@ -63,8 +102,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Select Xcode version
-        # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md#xcode
-        run: sudo xcode-select --switch /Applications/Xcode_15.0.app
+        # https://github.com/actions/runner-images/releases/tag/macos-13%2F20231218.2
+        run: sudo xcode-select --switch /Applications/Xcode_15.1.app
       - name: Set up docker (missing on macOS GitHub runners)
         # https://github.com/actions/runner-images/issues/2150
         run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bce259b8..6609475c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,8 +12,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Select Xcode version
-        # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md#xcode
-        run: sudo xcode-select --switch /Applications/Xcode_15.0.app
+        # https://github.com/actions/runner-images/releases/tag/macos-13%2F20231218.2
+        run: sudo xcode-select --switch /Applications/Xcode_15.1.app
       - uses: bufbuild/buf-setup-action@v1.28.1
         with:
           github_token: ${{ github.token }}
diff --git a/Libraries/ConnectMocks/MockBidirectionalStream.swift b/Libraries/ConnectMocks/MockBidirectionalStream.swift
index 9060f159..18ed8879 100644
--- a/Libraries/ConnectMocks/MockBidirectionalStream.swift
+++ b/Libraries/ConnectMocks/MockBidirectionalStream.swift
@@ -23,7 +23,7 @@ import SwiftProtobuf
 /// or by subclassing the type and overriding functions such as `send()`.
 ///
 /// To return data over the stream, outputs can be specified using `init(outputs: ...)`.
-@available(iOS 13.0, *)
+@available(iOS 13, *)
 open class MockBidirectionalStream<
     Input: ProtobufMessage,
     Output: ProtobufMessage
diff --git a/Libraries/ConnectMocks/MockClientOnlyStream.swift b/Libraries/ConnectMocks/MockClientOnlyStream.swift
index d63caf2a..2989d8de 100644
--- a/Libraries/ConnectMocks/MockClientOnlyStream.swift
+++ b/Libraries/ConnectMocks/MockClientOnlyStream.swift
@@ -22,7 +22,7 @@ import SwiftProtobuf
 /// or by subclassing the type and overriding functions such as `send()`.
 ///
 /// To return data over the stream, outputs can be specified using `init(outputs: ...)`.
-@available(iOS 13.0, *)
+@available(iOS 13, *)
 open class MockClientOnlyStream<
     Input: ProtobufMessage,
     Output: ProtobufMessage
diff --git a/Libraries/ConnectMocks/MockServerOnlyStream.swift b/Libraries/ConnectMocks/MockServerOnlyStream.swift
index 4ed6dea9..fe3e0c16 100644
--- a/Libraries/ConnectMocks/MockServerOnlyStream.swift
+++ b/Libraries/ConnectMocks/MockServerOnlyStream.swift
@@ -23,7 +23,7 @@ import SwiftProtobuf
 /// or by subclassing the type and overriding functions such as `send()`.
 ///
 /// To return data over the stream, outputs can be specified using `init(outputs: ...)`.
-@available(iOS 13.0, *)
+@available(iOS 13, *)
 open class MockServerOnlyStream<
     Input: ProtobufMessage,
     Output: ProtobufMessage
diff --git a/Tests/ConnectLibraryTests/ConnectConformance/CallbackConformanceTests.swift b/Tests/ConnectLibraryTests/ConnectConformance/CallbackConformanceTests.swift
index 99ce2118..ccf519c6 100644
--- a/Tests/ConnectLibraryTests/ConnectConformance/CallbackConformanceTests.swift
+++ b/Tests/ConnectLibraryTests/ConnectConformance/CallbackConformanceTests.swift
@@ -180,10 +180,7 @@ final class CallbackConformanceTests: XCTestCase {
     }
 
     // Minimum requirements for runtime support for parameterized protocol types
-    @available(iOS 16, *)
-    @available(macOS 13, *)
-    @available(tvOS 16, *)
-    @available(watchOS 9, *)
+    @available(macOS 13, iOS 16, watchOS 9, tvOS 16, *)
     func testPingPong() {
         func createPayload(
             requestSize: Int,
diff --git a/Tests/ConnectLibraryTests/ConnectTests/InterceptorIntegrationTests.swift b/Tests/ConnectLibraryTests/ConnectTests/InterceptorIntegrationTests.swift
index e9ff20a0..ba561082 100644
--- a/Tests/ConnectLibraryTests/ConnectTests/InterceptorIntegrationTests.swift
+++ b/Tests/ConnectLibraryTests/ConnectTests/InterceptorIntegrationTests.swift
@@ -16,9 +16,7 @@
 import SwiftProtobuf
 import XCTest
 
-@available(iOS 16, *)
-@available(tvOS 16, *)
-@available(watchOS 9, *)
+@available(iOS 13, *)
 final class InterceptorIntegrationTests: XCTestCase {
     func testUnaryInterceptorSuccess() async {
         let trackedSteps = Locked([InterceptorStep]())
@@ -112,6 +110,7 @@ final class InterceptorIntegrationTests: XCTestCase {
         ])
     }
 
+    @available(macOS 13, iOS 16, watchOS 9, tvOS 16, *) // Required for .contains()
     func testUnaryInterceptorIsCalledWithMetrics() async {
         let trackedSteps = Locked([InterceptorStep]())
         let client = self.createClient(interceptors: [
@@ -139,6 +138,7 @@ final class InterceptorIntegrationTests: XCTestCase {
         ))
     }
 
+    @available(macOS 13, iOS 16, watchOS 9, tvOS 16, *) // Required for .contains()
     func testStreamInterceptorIsCalledWithMetrics() async throws {
         let trackedSteps = Locked([InterceptorStep]())
         let client = self.createClient(interceptors: [