diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0594281..2076496 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: macos-12
     strategy:
       matrix:
-        xcode: ['13.3', '14.2']
+        xcode: ['14.2']
         config: ['debug', 'release']
     steps:
     - uses: actions/checkout@v3
diff --git a/Package.swift b/Package.swift
index 17a9fa0..94e1546 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version: 5.7
+// swift-tools-version: 5.6
 
 import PackageDescription