diff --git a/.github/workflows/Build.yml b/.github/workflows/Build.yml
new file mode 100644
index 0000000..9fb89c4
--- /dev/null
+++ b/.github/workflows/Build.yml
@@ -0,0 +1,22 @@
+name: Build
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        platform: [macos-latest]
+    runs-on: ${{ matrix.platform }}
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Build
+      run: swift build -v
+    - name: Run tests
+      run: swift test -v
+    
diff --git a/Package.swift b/Package.swift
index 1c47a25..65d482c 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version: 5.6
+// swift-tools-version: 5.5
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
diff --git a/README.md b/README.md
index 232cbe8..69ca042 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-![Supported Platforms](https://img.shields.io/static/v1?label=Supported%20Platforms&message=iOS%20|%20macOS%20|%20tvOS%20|%20watchOS&color=red&style=flat&logo=swift&labelColor=white) ![Swift Versions](https://img.shields.io/static/v1?label=Swift&message=5.6&color=red&style=flat&logo=swift&labelColor=white)
+![Supported Platforms](https://img.shields.io/static/v1?label=Supported%20Platforms&message=iOS%20|%20macOS%20|%20tvOS%20|%20watchOS&color=red&style=flat&logo=swift&labelColor=white) ![Swift Versions](https://img.shields.io/static/v1?label=Swift&message=5.5&color=red&style=flat&logo=swift&labelColor=white)
 
 # AsyncValue