diff --git a/.github/workflows/Build.yaml b/.github/workflows/Build.yaml
index a8006fb..13db036 100644
--- a/.github/workflows/Build.yaml
+++ b/.github/workflows/Build.yaml
@@ -16,8 +16,7 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - 'master'
-      - 'develop'
+      - '*'
 
 jobs:
   build:
diff --git a/FileSystem.Adapters.AmazonS3/src/AmazonS3Adapter.cs b/FileSystem.Adapters.AmazonS3/src/AmazonS3Adapter.cs
index a997aa5..67c33f0 100644
--- a/FileSystem.Adapters.AmazonS3/src/AmazonS3Adapter.cs
+++ b/FileSystem.Adapters.AmazonS3/src/AmazonS3Adapter.cs
@@ -15,10 +15,10 @@ namespace SharpGrip.FileSystem.Adapters.AmazonS3
 {
     public class AmazonS3Adapter : Adapter
     {
-        private readonly AmazonS3Client client;
+        private readonly IAmazonS3 client;
         private readonly string bucketName;
 
-        public AmazonS3Adapter(string prefix, string rootPath, AmazonS3Client client, string bucketName) : base(prefix, rootPath)
+        public AmazonS3Adapter(string prefix, string rootPath, IAmazonS3 client, string bucketName) : base(prefix, rootPath)
         {
             this.client = client;
             this.bucketName = bucketName;
diff --git a/Tests/Tests.csproj b/Tests/Tests.csproj
index 77e7fe8..7264d21 100644
--- a/Tests/Tests.csproj
+++ b/Tests/Tests.csproj
@@ -8,7 +8,11 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.0" />
-        <PackageReference Include="Moq" Version="4.18.4" />
+        <PackageReference Include="NSubstitute" Version="5.0.0" />
+        <PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.16">
+          <PrivateAssets>all</PrivateAssets>
+          <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
         <PackageReference Include="xunit" Version="2.5.0" />
         <PackageReference Include="xunit.runner.console" Version="2.5.0">
           <PrivateAssets>all</PrivateAssets>
diff --git a/Tests/src/FileSystem.Adapters.AmazonS3/AmazonS3AdapterTest.cs b/Tests/src/FileSystem.Adapters.AmazonS3/AmazonS3AdapterTest.cs
index 41fdded..9f7838e 100644
--- a/Tests/src/FileSystem.Adapters.AmazonS3/AmazonS3AdapterTest.cs
+++ b/Tests/src/FileSystem.Adapters.AmazonS3/AmazonS3AdapterTest.cs
@@ -1,9 +1,8 @@
 using System;
 using System.Threading.Tasks;
-using Amazon;
 using Amazon.S3;
 using Amazon.S3.Model;
-using Moq;
+using NSubstitute;
 using SharpGrip.FileSystem.Adapters.AmazonS3;
 using SharpGrip.FileSystem.Models;
 using Xunit;
@@ -15,8 +14,8 @@ public class AmazonS3AdapterTest
         [Fact]
         public void Test_Instantiation()
         {
-            var amazonS3Client = new Mock<AmazonS3Client>("awsAccessKeyId", "awsSecretAccessKey", RegionEndpoint.USEast2);
-            var amazonS3Adapter = new AmazonS3Adapter("prefix", "/root-path", amazonS3Client.Object, "bucket");
+            var amazonS3Client = Substitute.For<IAmazonS3>();
+            var amazonS3Adapter = new AmazonS3Adapter("prefix", "/root-path", amazonS3Client, "bucket");
 
             Assert.Equal("prefix", amazonS3Adapter.Prefix);
             Assert.Equal("/root-path", amazonS3Adapter.RootPath);
@@ -25,17 +24,16 @@ public void Test_Instantiation()
         [Fact]
         public async Task Test_Get_File_Async()
         {
-            var amazonS3Client = new Mock<AmazonS3Client>("awsAccessKeyId", "awsSecretAccessKey", RegionEndpoint.USEast2);
-            var amazonS3Adapter = new AmazonS3Adapter("prefix-1", "/root-path-1", amazonS3Client.Object, "bucket-1");
+            var amazonS3Client = Substitute.For<IAmazonS3>();
+            var amazonS3Adapter = new AmazonS3Adapter("prefix-1", "/root-path-1", amazonS3Client, "bucket-1");
 
-            var getObjectResponse = new Mock<GetObjectResponse>();
+            var getObjectResponse = Substitute.For<GetObjectResponse>();
 
-            getObjectResponse.SetupAllProperties();
-            getObjectResponse.Object.Key = "test.txt";
-            getObjectResponse.Object.ContentLength = 1;
-            getObjectResponse.Object.LastModified = new DateTime(1970, 1, 1);
+            getObjectResponse.Key = "test.txt";
+            getObjectResponse.ContentLength = 1;
+            getObjectResponse.LastModified = new DateTime(1970, 1, 1);
 
-            amazonS3Client.Setup(o => o.GetObjectAsync("bucket-1", "/root-path-1/test.txt", default)).ReturnsAsync(getObjectResponse.Object);
+            amazonS3Client.GetObjectAsync("bucket-1", "/root-path-1/test.txt").Returns(getObjectResponse);
 
             var fileModel = new FileModel
             {
diff --git a/Tests/src/FileSystem.Adapters.AzureBlobStorage/AzureBlobStorageAdapterTest.cs b/Tests/src/FileSystem.Adapters.AzureBlobStorage/AzureBlobStorageAdapterTest.cs
index 3fb6f69..72b76a5 100644
--- a/Tests/src/FileSystem.Adapters.AzureBlobStorage/AzureBlobStorageAdapterTest.cs
+++ b/Tests/src/FileSystem.Adapters.AzureBlobStorage/AzureBlobStorageAdapterTest.cs
@@ -1,5 +1,5 @@
 using Azure.Storage.Blobs;
-using Moq;
+using NSubstitute;
 using SharpGrip.FileSystem.Adapters.AzureBlobStorage;
 using Xunit;
 
@@ -10,8 +10,8 @@ public class AzureBlobStorageAdapterTest
         [Fact]
         public void Test_Instantiation()
         {
-            var blobContainerClient = new Mock<BlobContainerClient>();
-            var azureBlobStorageAdapter = new AzureBlobStorageAdapter("prefix", "/root-path", blobContainerClient.Object);
+            var blobContainerClient = Substitute.For<BlobContainerClient>();
+            var azureBlobStorageAdapter = new AzureBlobStorageAdapter("prefix", "/root-path", blobContainerClient);
 
             Assert.Equal("prefix", azureBlobStorageAdapter.Prefix);
             Assert.Equal("/root-path", azureBlobStorageAdapter.RootPath);
diff --git a/Tests/src/FileSystem.Adapters.Sftp/SftpAdapterTest.cs b/Tests/src/FileSystem.Adapters.Sftp/SftpAdapterTest.cs
index ed4126b..a23a60c 100644
--- a/Tests/src/FileSystem.Adapters.Sftp/SftpAdapterTest.cs
+++ b/Tests/src/FileSystem.Adapters.Sftp/SftpAdapterTest.cs
@@ -1,5 +1,5 @@
 using System.Threading.Tasks;
-using Moq;
+using NSubstitute;
 using Renci.SshNet;
 using SharpGrip.FileSystem.Adapters.Sftp;
 using SharpGrip.FileSystem.Exceptions;
@@ -12,8 +12,8 @@ public class SftpAdapterTest
         [Fact]
         public void Test_Instantiation()
         {
-            var sftpClient = new Mock<SftpClient>("hostName", "userName", "password");
-            var sftpAdapter = new SftpAdapter("prefix", "/root-path", sftpClient.Object);
+            var sftpClient = Substitute.For<SftpClient>("hostName", "userName", "password");
+            var sftpAdapter = new SftpAdapter("prefix", "/root-path", sftpClient);
 
             Assert.Equal("prefix", sftpAdapter.Prefix);
             Assert.Equal("/root-path", sftpAdapter.RootPath);
@@ -22,8 +22,8 @@ public void Test_Instantiation()
         [Fact]
         public void Test_Connect()
         {
-            var sftpClient = new Mock<SftpClient>("hostName", "userName", "password");
-            var sftpAdapter = new SftpAdapter("prefix-1", "/root-path-1", sftpClient.Object);
+            var sftpClient = Substitute.For<SftpClient>("hostName", "userName", "password");
+            var sftpAdapter = new SftpAdapter("prefix-1", "/root-path-1", sftpClient);
 
             Assert.Throws<ConnectionException>(() => sftpAdapter.Connect());
         }
@@ -31,8 +31,8 @@ public void Test_Connect()
         [Fact]
         public async Task Test_Get_File_Async()
         {
-            var sftpClient = new Mock<SftpClient>("hostName", "userName", "password");
-            var sftpAdapter = new SftpAdapter("prefix-1", "/root-path-1", sftpClient.Object);
+            var sftpClient = Substitute.For<SftpClient>("hostName", "userName", "password");
+            var sftpAdapter = new SftpAdapter("prefix-1", "/root-path-1", sftpClient);
 
             await Assert.ThrowsAsync<ConnectionException>(async () => await sftpAdapter.GetFileAsync("prefix-1://test.txt"));
         }