diff --git a/YaeBlog.Core/Services/EssayScanService.cs b/YaeBlog.Core/Services/EssayScanService.cs
index db14f83..98d71e1 100644
--- a/YaeBlog.Core/Services/EssayScanService.cs
+++ b/YaeBlog.Core/Services/EssayScanService.cs
@@ -133,13 +133,12 @@ public partial class EssayScanService(
     private static Task<ImageScanResult> ScanUnusedImagesInternal(IEnumerable<BlogContent> contents,
         DirectoryInfo root)
     {
-        Regex imageRegex = ImageRegex();
         ConcurrentBag<FileInfo> unusedImage = [];
         ConcurrentBag<FileInfo> notFoundImage = [];
 
         Parallel.ForEach(contents, content =>
         {
-            MatchCollection result = imageRegex.Matches(content.FileContent);
+            MatchCollection result = ImagePattern.Matches(content.FileContent);
             DirectoryInfo imageDirectory = new(Path.Combine(root.FullName, content.FileName));
 
             Dictionary<string, bool> usedDictionary;
@@ -182,7 +181,7 @@ public partial class EssayScanService(
     }
 
     [GeneratedRegex(@"\!\[.*?\]\((.*?)\)")]
-    private static partial Regex ImageRegex();
+    private static partial Regex ImagePattern { get; }
 
     private void ValidateDirectory(string root, out DirectoryInfo drafts, out DirectoryInfo posts)
     {
diff --git a/YaeBlog.Core/Services/RendererService.cs b/YaeBlog.Core/Services/RendererService.cs
index 8ed7103..b463336 100644
--- a/YaeBlog.Core/Services/RendererService.cs
+++ b/YaeBlog.Core/Services/RendererService.cs
@@ -136,7 +136,8 @@ public partial class RendererService(
     }
 
     [GeneratedRegex(@"(?<!\\)[^\#\*_\-\+\`{}\[\]!~]+")]
-    private static partial Regex DescriptionPattern();
+    // private static partial Regex DescriptionPattern();
+    private static partial Regex DescriptionPattern { get; }
 
     private string GetDescription(BlogContent content)
     {
@@ -152,7 +153,7 @@ public partial class RendererService(
         }
 
         string rawContent = content.FileContent[..pos];
-        MatchCollection matches = DescriptionPattern().Matches(rawContent);
+        MatchCollection matches = DescriptionPattern.Matches(rawContent);
 
         StringBuilder builder = new();
         foreach (Match match in matches)
diff --git a/YaeBlog.Core/YaeBlog.Core.csproj b/YaeBlog.Core/YaeBlog.Core.csproj
index ef44f03..7089599 100644
--- a/YaeBlog.Core/YaeBlog.Core.csproj
+++ b/YaeBlog.Core/YaeBlog.Core.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
@@ -12,10 +12,10 @@
 
   <ItemGroup>
     <PackageReference Include="AngleSharp" Version="1.1.0" />
-    <PackageReference Include="Markdig" Version="0.34.0" />
-    <PackageReference Include="Microsoft.AspNetCore.Components.Web" Version="8.0.6" />
-    <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.0" />
-    <PackageReference Include="YamlDotNet" Version="13.7.1" />
+    <PackageReference Include="Markdig" Version="0.38.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.Web" Version="9.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="9.0.0" />
+    <PackageReference Include="YamlDotNet" Version="16.2.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/YaeBlog/Dockerfile b/YaeBlog/Dockerfile
index 301432e..8883495 100644
--- a/YaeBlog/Dockerfile
+++ b/YaeBlog/Dockerfile
@@ -1,7 +1,7 @@
-FROM mcr.microsoft.com/dotnet/aspnet:8.0
+FROM mcr.microsoft.com/dotnet/aspnet:9.0
 
 WORKDIR /app
-COPY bin/Release/net8.0/publish/ ./
+COPY bin/Release/net9.0/publish/ ./
 COPY source/ ./source/
 COPY appsettings.json .
 
diff --git a/YaeBlog/YaeBlog.csproj b/YaeBlog/YaeBlog.csproj
index 976e76e..a95344c 100644
--- a/YaeBlog/YaeBlog.csproj
+++ b/YaeBlog/YaeBlog.csproj
@@ -5,12 +5,12 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="Blazor.Bootstrap" Version="3.0.0-preview.2" />
+      <PackageReference Include="Blazor.Bootstrap" Version="3.2.0" />
       <PackageReference Include="System.CommandLine" Version="2.0.0-beta4.22272.1" />
     </ItemGroup>
 
     <PropertyGroup>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <Nullable>enable</Nullable>
         <ImplicitUsings>enable</ImplicitUsings>
     </PropertyGroup>