diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e1549d5..a5eac504 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,17 @@
+# 9.0.0
+- Allow providing a custom `nonce` via GSI to AppAuth ([#402](https://github.com/google/GoogleSignIn-iOS/pull/402), [#476](https://github.com/google/GoogleSignIn-iOS/pull/476))
+- Fix invalid error code in `GIDSignIn` ([#472](https://github.com/google/GoogleSignIn-iOS/pull/472))
+- Add support for GTMAppAuth 5 on macOS ([#522](https://github.com/google/GoogleSignIn-iOS/pull/522))
+- Internal
+  - Add AppAuthCore as explicit dependency ([#470](https://github.com/google/GoogleSignIn-iOS/pull/470))
+  - Update iPhone simulator from 14 to 15 ([#494](https://github.com/google/GoogleSignIn-iOS/pull/494))
+  - Fix swift button integration test ([#497](https://github.com/google/GoogleSignIn-iOS/pull/497))
+  - Update runner to macos-13 ([#498](https://github.com/google/GoogleSignIn-iOS/pull/498))
+  - Update `scorecards.yml` to use `upload-artifact@v4.6.2` ([#516](https://github.com/google/GoogleSignIn-iOS/pull/516))
+  - Update AppAuth and GTMAppAuth dependencies ([#517](https://github.com/google/GoogleSignIn-iOS/pull/517), [#521](https://github.com/google/GoogleSignIn-iOS/pull/521))
+  - Fix Swift integration tests for a returning user ([#518](https://github.com/google/GoogleSignIn-iOS/pull/518))
+  - Update `.gitignore` to include .build and Package.resolved ([#520](https://github.com/google/GoogleSignIn-iOS/pull/520))
+
 # 8.0.0
 - General release adding Firebase App Check support to establish your
 application's integrity while signing in with Google
diff --git a/GoogleSignIn.podspec b/GoogleSignIn.podspec
index 41bebbb4..91e898e4 100644
--- a/GoogleSignIn.podspec
+++ b/GoogleSignIn.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'GoogleSignIn'
-  s.version          = '8.0.0'
+  s.version          = '9.0.0'
   s.summary          = 'Enables iOS apps to sign in with Google.'
   s.description      = <<-DESC
 The Google Sign-In SDK allows users to sign in with their Google account from third-party apps.
diff --git a/GoogleSignInSwiftSupport.podspec b/GoogleSignInSwiftSupport.podspec
index ea12685d..5b522193 100644
--- a/GoogleSignInSwiftSupport.podspec
+++ b/GoogleSignInSwiftSupport.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name = 'GoogleSignInSwiftSupport'
-  s.version = '8.0.0'
+  s.version = '9.0.0'
   s.swift_version = '5.0'
   s.summary = 'Adds Swift-focused support for Google Sign-In.'
   s.description = 'Additional Swift support for the Google Sign-In SDK.'
@@ -24,7 +24,7 @@ Pod::Spec.new do |s|
     'CoreGraphics',
     'SwiftUI',
   ]
-  s.dependency 'GoogleSignIn', '~> 8.0'
+  s.dependency 'GoogleSignIn', '~> 9.0'
   s.resource_bundles = {
     'GoogleSignInSwiftSupport_Privacy' => 'GoogleSignInSwift/Sources/Resources/PrivacyInfo.xcprivacy'
   }
diff --git a/Package.swift b/Package.swift
index f38b3b11..5619a2c3 100644
--- a/Package.swift
+++ b/Package.swift
@@ -17,7 +17,7 @@
 
 import PackageDescription
 
-let googleSignInVersion = "8.0.0"
+let googleSignInVersion = "9.0.0"
 
 let package = Package(
   name: "GoogleSignIn",