diff --git a/Applications/Editor/Main/Cube.Pdf.Editor.csproj b/Applications/Editor/Main/Cube.Pdf.Editor.csproj
index e30231dd..5f2f6852 100644
--- a/Applications/Editor/Main/Cube.Pdf.Editor.csproj
+++ b/Applications/Editor/Main/Cube.Pdf.Editor.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <Version>2.4.0</Version>
+        <Version>2.4.1</Version>
         <Authors>clown;cube-soft</Authors>
         <Company>CubeSoft</Company>
         <Product>CubePdfUtility</Product>
diff --git a/Applications/Editor/Readme.ja.md b/Applications/Editor/Readme.ja.md
index d1d18e6b..80e2442b 100644
--- a/Applications/Editor/Readme.ja.md
+++ b/Applications/Editor/Readme.ja.md
@@ -125,6 +125,8 @@ CubePDF Utility は、以下のライブラリを利用しています。
 
 ## バージョン履歴
 
+* 2023-07-19 version 2.4.1
+    - PDFium を Chromium 115 相当に更新
 * 2023-06-15 version 2.4.0
     - 作業フォルダーの初期設定をシステムの規定値に変更
     - iText 8.0.0 に更新
diff --git a/Applications/Editor/Readme.md b/Applications/Editor/Readme.md
index 83af76c5..9b5270a4 100644
--- a/Applications/Editor/Readme.md
+++ b/Applications/Editor/Readme.md
@@ -119,6 +119,8 @@ Dependencies of the CubePDF Utility are as follows.
 
 ## History
 
+* 2023-07-19 version 2.4.1
+    - Update PDFium to Chromium 115 compatible.
 * 2023-06-15 version 2.4.0
     - Change the initial settings of temp directory to the system's default value.
     - Update iText to 8.0.0.
diff --git a/Tests/Editor/Cube.Pdf.Editor.Tests.csproj b/Tests/Editor/Cube.Pdf.Editor.Tests.csproj
index 94089b65..854e1236 100644
--- a/Tests/Editor/Cube.Pdf.Editor.Tests.csproj
+++ b/Tests/Editor/Cube.Pdf.Editor.Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <Version>2.4.0</Version>
+        <Version>2.4.1</Version>
         <Authors>clown;cube-soft</Authors>
         <Company>CubeSoft</Company>
         <Copyright>Copyright © 2013 CubeSoft, Inc.</Copyright>
diff --git a/Tests/Editor/Sources/Presenters/SettingTest.cs b/Tests/Editor/Sources/Presenters/SettingTest.cs
index 80e71b48..e8f06bc4 100644
--- a/Tests/Editor/Sources/Presenters/SettingTest.cs
+++ b/Tests/Editor/Sources/Presenters/SettingTest.cs
@@ -115,7 +115,7 @@ private void AssertObject(SettingViewModel src)
         {
             Assert.That(src.Title,                 Is.Not.Null.And.Not.Empty);
             Assert.That(src.Version.Text,          Is.Not.Null.And.Not.Empty);
-            Assert.That(src.Version.Value,         Does.StartWith("CubePDF Utility 2.4.0 "));
+            Assert.That(src.Version.Value,         Does.StartWith("CubePDF Utility 2.4.1 "));
             Assert.That(src.Windows.Text,          Does.StartWith("Microsoft Windows"));
             Assert.That(src.Framework.Text,        Does.StartWith("Microsoft .NET Framework"));
             Assert.That(src.Link.Text,             Is.EqualTo("Copyright © 2013 CubeSoft, Inc."));