diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 19031c98946..01cce58414d 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -8,6 +8,8 @@ jobs:
   tests:
     name: Test
     uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      linux_exclude_swift_versions: "[{\"swift_version\": \"5.8\"}]"
   soundness:
     name: Soundness
     uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
diff --git a/Package.swift b/Package.swift
index 2cd4c6469a5..43df607866b 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.8
+// swift-tools-version: 5.9
 
 import Foundation
 import PackageDescription