diff --git a/src/activities/Elsa.Activities.File/Activities/DeleteFile/DeleteFile.cs b/src/activities/Elsa.Activities.File/Activities/DeleteFile/DeleteFile.cs
index e6515fa81..5858d71dd 100644
--- a/src/activities/Elsa.Activities.File/Activities/DeleteFile/DeleteFile.cs
+++ b/src/activities/Elsa.Activities.File/Activities/DeleteFile/DeleteFile.cs
@@ -12,7 +12,7 @@ namespace Elsa.Activities.File
     public class DeleteFile : Activity
     {
         [ActivityInput(Hint = "Path of the file to delete.")]
-        public string Path { get; set; }
+        public string Path { get; set; } = default!;
 
         protected override IActivityExecutionResult OnExecute(ActivityExecutionContext context)
         {
diff --git a/src/activities/Elsa.Activities.File/Activities/EnumeratreFiles/EnumerateFiles.cs b/src/activities/Elsa.Activities.File/Activities/EnumeratreFiles/EnumerateFiles.cs
index c7cb7155b..414ae1748 100644
--- a/src/activities/Elsa.Activities.File/Activities/EnumeratreFiles/EnumerateFiles.cs
+++ b/src/activities/Elsa.Activities.File/Activities/EnumeratreFiles/EnumerateFiles.cs
@@ -14,10 +14,10 @@ namespace Elsa.Activities.File
     public class EnumerateFiles : Activity
     {
         [ActivityInput(Hint = "Path of the folder to enumerate files.")]
-        public string Path { get; set; }
+        public string Path { get; set; } = default!;
 
         [ActivityInput(Hint = "Pattern for files to return.")]
-        public string Pattern { get; set; }
+        public string? Pattern { get; set; }
 
         [ActivityInput(Hint = "Ignore inaccessible files.", Label = "Ignore Inaccessible")]
         public bool IgnoreInaccessible { get; set; } = true;
@@ -29,12 +29,12 @@ namespace Elsa.Activities.File
         public bool SubDirectories { get; set; } = false;
 
         [ActivityOutput(Hint = "List of files.")]
-        public IEnumerable<string> Files { get; set; }
+        public IEnumerable<string>? Files { get; set; }
 
         protected override IActivityExecutionResult OnExecute(ActivityExecutionContext context)
         {
             if (string.IsNullOrWhiteSpace(Pattern))
-                return Done(Directory.EnumerateFiles(Path));
+                return Done(Directory.EnumerateFiles(Path!));
 
             var options = new EnumerationOptions()
             {
diff --git a/src/activities/Elsa.Activities.File/Activities/FileExists/FileExists.cs b/src/activities/Elsa.Activities.File/Activities/FileExists/FileExists.cs
index 18d10499d..f9ccc880d 100644
--- a/src/activities/Elsa.Activities.File/Activities/FileExists/FileExists.cs
+++ b/src/activities/Elsa.Activities.File/Activities/FileExists/FileExists.cs
@@ -12,7 +12,7 @@ namespace Elsa.Activities.File
     public class FileExists : Activity
     {
         [ActivityInput(Hint = "Path of the file to delete.")]
-        public string Path { get; set; }
+        public string Path { get; set; } = default!;
 
         protected override IActivityExecutionResult OnExecute(ActivityExecutionContext context)
         {
diff --git a/src/activities/Elsa.Activities.File/Activities/FileExists/FileExistsBuilderExtensions.cs b/src/activities/Elsa.Activities.File/Activities/FileExists/FileExistsBuilderExtensions.cs
index 704dfda95..b5f430586 100644
--- a/src/activities/Elsa.Activities.File/Activities/FileExists/FileExistsBuilderExtensions.cs
+++ b/src/activities/Elsa.Activities.File/Activities/FileExists/FileExistsBuilderExtensions.cs
@@ -12,25 +12,25 @@ namespace Elsa.Activities.File
     {
         public static IActivityBuilder FileExists(this IActivityBuilder builder, Action<ISetupActivity<FileExists>> setup, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) => builder.Then(setup, null, lineNumber, sourceFile);
 
-        public static IActivityBuilder FileExists(this IActivityBuilder builder, Func<ActivityExecutionContext, string> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder FileExists(this IActivityBuilder builder, Func<ActivityExecutionContext, string?> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.FileExists(activity => activity
                     .Set(x => x.Path, path),
                 lineNumber,
                 sourceFile);
 
-        public static IActivityBuilder FileExists(this IActivityBuilder builder, Func<ActivityExecutionContext, ValueTask<string>> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder FileExists(this IActivityBuilder builder, Func<ActivityExecutionContext, ValueTask<string?>> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.FileExists(activity => activity
                     .Set(x => x.Path, path),
                 lineNumber,
                 sourceFile);
 
-        public static IActivityBuilder FileExists(this IActivityBuilder builder, Func<string> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder FileExists(this IActivityBuilder builder, Func<string?> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.FileExists(activity => activity
                     .Set(x => x.Path, path),
                 lineNumber,
                 sourceFile);
 
-        public static IActivityBuilder FileExists(this IActivityBuilder builder, Func<ValueTask<string>> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder FileExists(this IActivityBuilder builder, Func<ValueTask<string?>> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.FileExists(activity => activity
                     .Set(x => x.Path, path),
                 lineNumber,
diff --git a/src/activities/Elsa.Activities.File/Activities/OutFile/OutFile.cs b/src/activities/Elsa.Activities.File/Activities/OutFile/OutFile.cs
index d8b672731..66987e3b2 100644
--- a/src/activities/Elsa.Activities.File/Activities/OutFile/OutFile.cs
+++ b/src/activities/Elsa.Activities.File/Activities/OutFile/OutFile.cs
@@ -17,10 +17,10 @@ namespace Elsa.Activities.File
     public class OutFile : Activity
     {
         [ActivityInput(Hint = "Bytes to write to file.", SupportedSyntaxes = new[] { SyntaxNames.JavaScript }, DefaultSyntax = SyntaxNames.JavaScript)]
-        public byte[] Bytes { get; set; }
+        public byte[] Bytes { get; set; } = default!;
 
         [ActivityInput(Hint = "Path to create file at.", UIHint = ActivityInputUIHints.SingleLine, SupportedSyntaxes = new[] { SyntaxNames.JavaScript, SyntaxNames.Liquid })]
-        public string Path { get; set; }
+        public string Path { get; set; } = default!;
 
         [ActivityInput(Hint = "How the output file should be written to.", UIHint = ActivityInputUIHints.Dropdown)]
         public CopyMode Mode { get; set; } = CopyMode.CreateNew;
diff --git a/src/activities/Elsa.Activities.File/Activities/OutFile/OutFileBuilderExtensions.cs b/src/activities/Elsa.Activities.File/Activities/OutFile/OutFileBuilderExtensions.cs
index 981aea9e6..844b29082 100644
--- a/src/activities/Elsa.Activities.File/Activities/OutFile/OutFileBuilderExtensions.cs
+++ b/src/activities/Elsa.Activities.File/Activities/OutFile/OutFileBuilderExtensions.cs
@@ -12,7 +12,7 @@ namespace Elsa.Activities.File
     {
         public static IActivityBuilder OutFile(this IBuilder builder, Action<ISetupActivity<OutFile>> setup, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) => builder.Then(setup, null, lineNumber, sourceFile);
 
-        public static IActivityBuilder OutFile(this IBuilder builder, Func<ActivityExecutionContext, byte[]> bytes, Func<ActivityExecutionContext, string> path, Func<ActivityExecutionContext, CopyMode> mode, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder OutFile(this IBuilder builder, Func<ActivityExecutionContext, byte[]?> bytes, Func<ActivityExecutionContext, string?> path, Func<ActivityExecutionContext, CopyMode> mode, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.OutFile(activity => activity
                     .Set(x => x.Bytes, bytes)
                     .Set(x => x.Path, path)
@@ -20,7 +20,7 @@ namespace Elsa.Activities.File
                 lineNumber, 
                 sourceFile);
 
-        public static IActivityBuilder OutFile(this IBuilder builder, Func<ActivityExecutionContext, ValueTask<byte[]>> bytes, Func<ActivityExecutionContext, ValueTask<string>> path, Func<ActivityExecutionContext, ValueTask<CopyMode>> mode, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder OutFile(this IBuilder builder, Func<ActivityExecutionContext, ValueTask<byte[]?>> bytes, Func<ActivityExecutionContext, ValueTask<string?>> path, Func<ActivityExecutionContext, ValueTask<CopyMode>> mode, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.OutFile(activity => activity
                     .Set(x => x.Bytes, bytes)
                     .Set(x => x.Path, path)
@@ -28,7 +28,7 @@ namespace Elsa.Activities.File
                 lineNumber,
                 sourceFile);
 
-        public static IActivityBuilder OutFile(this IBuilder builder, Func<byte[]> bytes, Func<string> path, Func<CopyMode> mode, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder OutFile(this IBuilder builder, Func<byte[]?> bytes, Func<string?> path, Func<CopyMode> mode, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.OutFile(activity => activity
                     .Set(x => x.Bytes, bytes)
                     .Set(x => x.Path, path)
@@ -36,7 +36,7 @@ namespace Elsa.Activities.File
                 lineNumber,
                 sourceFile);
 
-        public static IActivityBuilder OutFile(this IBuilder builder, Func<ValueTask<byte[]>> bytes, Func<ValueTask<string>> path, Func<ValueTask<CopyMode>> mode, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder OutFile(this IBuilder builder, Func<ValueTask<byte[]?>> bytes, Func<ValueTask<string?>> path, Func<ValueTask<CopyMode>> mode, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.OutFile(activity => activity
                     .Set(x => x.Bytes, bytes)
                     .Set(x => x.Path, path)
diff --git a/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFile.cs b/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFile.cs
index b4dd4ef3a..3a7a145bf 100644
--- a/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFile.cs
+++ b/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFile.cs
@@ -6,6 +6,7 @@ using Elsa.Services;
 using Elsa.Services.Models;
 using System.Threading.Tasks;
 
+// ReSharper disable once CheckNamespace
 namespace Elsa.Activities.File
 {
     [Action(Category = "File",
@@ -14,14 +15,14 @@ namespace Elsa.Activities.File
     public class ReadFile : Activity
     {
         [ActivityInput(Hint = "Path to read content from.", UIHint = ActivityInputUIHints.SingleLine, SupportedSyntaxes = new[] { SyntaxNames.JavaScript, SyntaxNames.Liquid })]
-        public string Path { get; set; }
+        public string Path { get; set; } = default!;
 
         [ActivityOutput(Hint = "Bytes of the file read.")]
-        public byte[] Bytes { get; set; }
+        public byte[]? Bytes { get; set; }
 
-        public async override ValueTask<IActivityExecutionResult> ExecuteAsync(ActivityExecutionContext context)
+        public override async ValueTask<IActivityExecutionResult> ExecuteAsync(ActivityExecutionContext context)
         {
-            var Bytes = await System.IO.File.ReadAllBytesAsync(Path);
+            Bytes = await System.IO.File.ReadAllBytesAsync(Path);
             return Done();
         }
     }
diff --git a/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFileBuilderExtensions.cs b/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFileBuilderExtensions.cs
index 91a6db3cd..c6f7bfc40 100644
--- a/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFileBuilderExtensions.cs
+++ b/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFileBuilderExtensions.cs
@@ -4,40 +4,42 @@ using System;
 using System.Runtime.CompilerServices;
 using System.Threading.Tasks;
 
+// ReSharper disable ExplicitCallerInfoArgument
+// ReSharper disable once CheckNamespace
 namespace Elsa.Activities.File
 {
     public static class ReadFileBuilderExtensions
     {
         public static IActivityBuilder ReadFile(this IBuilder builder, Action<ISetupActivity<OutFile>> setup, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) => builder.Then(setup, null, lineNumber, sourceFile);
 
-        public static IActivityBuilder ReadFile(this IBuilder builder, Func<ActivityExecutionContext, string> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
-            builder.OutFile(activity => activity
-                    .Set(x => x.Path, path), 
-                lineNumber, 
-                sourceFile);
-
-        public static IActivityBuilder ReadFile(this IBuilder builder, Func<ActivityExecutionContext, ValueTask<string>> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder ReadFile(this IBuilder builder, Func<ActivityExecutionContext, string?> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.OutFile(activity => activity
                     .Set(x => x.Path, path),
                 lineNumber,
                 sourceFile);
 
-        public static IActivityBuilder ReadFile(this IBuilder builder, Func<string> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder ReadFile(this IBuilder builder, Func<ActivityExecutionContext, ValueTask<string?>> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.OutFile(activity => activity
                     .Set(x => x.Path, path),
                 lineNumber,
                 sourceFile);
 
-        public static IActivityBuilder ReadFile(this IBuilder builder, Func<ValueTask<string>> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder ReadFile(this IBuilder builder, Func<string?> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.OutFile(activity => activity
                     .Set(x => x.Path, path),
                 lineNumber,
                 sourceFile);
 
-        public static IActivityBuilder ReadFile(this IBuilder builder, string path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+        public static IActivityBuilder ReadFile(this IBuilder builder, Func<ValueTask<string?>> path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
+            builder.OutFile(activity => activity
+                    .Set(x => x.Path, path),
+                lineNumber,
+                sourceFile);
+
+        public static IActivityBuilder ReadFile(this IBuilder builder, string? path, [CallerLineNumber] int lineNumber = default, [CallerFilePath] string? sourceFile = default) =>
             builder.OutFile(activity => activity
                     .Set(x => x.Path, path),
                 lineNumber,
                 sourceFile);
     }
-}
+}
\ No newline at end of file
diff --git a/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFileExtensions.cs b/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFileExtensions.cs
index e0a30ec7b..cd65e000e 100644
--- a/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFileExtensions.cs
+++ b/src/activities/Elsa.Activities.File/Activities/ReadFile/ReadFileExtensions.cs
@@ -3,14 +3,15 @@ using Elsa.Services.Models;
 using System;
 using System.Threading.Tasks;
 
+// ReSharper disable once CheckNamespace
 namespace Elsa.Activities.File
 {
     public static class ReadFileExtensions
     {
-        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, Func<ActivityExecutionContext, ValueTask<string>> path) => setup.Set(x => x.Path, path);
-        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, Func<ActivityExecutionContext, string> path) => setup.Set(x => x.Path, path);
-        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, Func<ValueTask<string>> path) => setup.Set(x => x.Path, path);
-        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, Func<string> path) => setup.Set(x => x.Path, path);
-        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, string path) => setup.Set(x => x.Path, path);
+        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, Func<ActivityExecutionContext, ValueTask<string?>> path) => setup.Set(x => x.Path, path);
+        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, Func<ActivityExecutionContext, string?> path) => setup.Set(x => x.Path, path);
+        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, Func<ValueTask<string?>> path) => setup.Set(x => x.Path, path);
+        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, Func<string?> path) => setup.Set(x => x.Path, path);
+        public static ISetupActivity<ReadFile> WithPath(this ISetupActivity<ReadFile> setup, string? path) => setup.Set(x => x.Path, path);
     }
 }
\ No newline at end of file
diff --git a/src/activities/Elsa.Activities.File/Activities/TempFile/TempFile.cs b/src/activities/Elsa.Activities.File/Activities/TempFile/TempFile.cs
index a2aea9a3c..00c2bbd3c 100644
--- a/src/activities/Elsa.Activities.File/Activities/TempFile/TempFile.cs
+++ b/src/activities/Elsa.Activities.File/Activities/TempFile/TempFile.cs
@@ -2,6 +2,7 @@ using Elsa.ActivityResults;
 using Elsa.Attributes;
 using Elsa.Services;
 
+// ReSharper disable once CheckNamespace
 namespace Elsa.Activities.File
 {
     [Action(Category = "File",
@@ -10,7 +11,7 @@ namespace Elsa.Activities.File
     public class TempFile : Activity
     {
         [ActivityOutput(Hint = "Path of the created temporary file.")]
-        public string Path { get; set; }
+        public string Path { get; set; } = default!;
 
         protected override IActivityExecutionResult OnExecute()
         {
diff --git a/src/activities/Elsa.Activities.File/Models/FileSystemChanged.cs b/src/activities/Elsa.Activities.File/Models/FileSystemChanged.cs
index bbe202466..37d1ab4c9 100644
--- a/src/activities/Elsa.Activities.File/Models/FileSystemChanged.cs
+++ b/src/activities/Elsa.Activities.File/Models/FileSystemChanged.cs
@@ -6,7 +6,8 @@ namespace Elsa.Activities.File.Models
     public class FileSystemChanged
     {
         public FileSystemChanged()
-        { }
+        {
+        }
 
         public FileSystemChanged(WatcherChangeTypes changeType, string directory, string fileName, string fullPath)
         {
@@ -19,14 +20,12 @@ namespace Elsa.Activities.File.Models
 
         public WatcherChangeTypes ChangeType { get; set; }
 
-        public string Directory { get; set; }
+        public string Directory { get; set; } = default!;
 
-        public string FileName { get; set; }
+        public string FileName { get; set; } = default!;
 
-        public string FullPath { get; set; }
+        public string FullPath { get; set; } = default!;
 
-        public string Pattern { get; set; }
-
-        public DateTime TimeStamp { get; set; }
+        public DateTime TimeStamp { get; set; } = default!;
     }
-}
+}
\ No newline at end of file