diff --git a/.github/workflows/ci-macos.yml b/.github/workflows/ci-macos.yml
index d0363e6..2db20fc 100644
--- a/.github/workflows/ci-macos.yml
+++ b/.github/workflows/ci-macos.yml
@@ -8,10 +8,10 @@ on:
 
 jobs:
   macos-test-build-release-xcode:
-    runs-on: macOS-latest
+    runs-on: macOS-11
     strategy:
       matrix:
-        xcode: ["11.7", "12.4"]
+        xcode: ["11.7", "12.5.1", "13.0"]
     steps:
       - name: Checkout
         uses: actions/checkout@master
diff --git a/.swift-version b/.swift-version
deleted file mode 100644
index cdb98d2..0000000
--- a/.swift-version
+++ /dev/null
@@ -1 +0,0 @@
-5.1.3