diff --git a/.github/funding.yml b/.github/funding.yml
deleted file mode 100644
index 15edf6e..0000000
--- a/.github/funding.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-github: sindresorhus
-open_collective: sindresorhus
-patreon: sindresorhus
-custom: https://sindresorhus.com/donate
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a80cc11..ecfa450 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,7 +4,7 @@ on:
   - pull_request
 jobs:
   test:
-    runs-on: macos-latest
+    runs-on: macos-11
     steps:
       - uses: actions/checkout@v2
       - run: swift test
diff --git a/Package.swift b/Package.swift
index 462b8ab..b88d71a 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.3
+// swift-tools-version:5.4
 import PackageDescription
 
 let package = Package(