diff --git a/.github/workflows/ci_build.yml b/.github/workflows/ci_build.yml
index 3c9a048..410237a 100644
--- a/.github/workflows/ci_build.yml
+++ b/.github/workflows/ci_build.yml
@@ -8,12 +8,12 @@ on:
 
 env:
   BUILD_DIR: src\Build\Bin
-  MSBUILD_TOOLSET: v143
+  MSBUILD_TOOLSET: v145
   ARTIFACT_PREFIX: NppJSONViewer_
 
 jobs:
   build:
-    runs-on: windows-latest
+    runs-on: windows-2025-vs2026
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index f3a128f..169117b 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -23,7 +23,7 @@ permissions:
   contents: read
 
 env:
-  MSBUILD_TOOLSET: v143
+  MSBUILD_TOOLSET: v145
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
@@ -32,7 +32,7 @@ concurrency:
 jobs:
   analyze:
     name: Analyze
-    runs-on: windows-latest
+    runs-on: windows-2025-vs2026
     timeout-minutes: 20
     permissions:
       actions: read
diff --git a/src/NppJsonViewer/NPPJSONViewer.vcxproj b/src/NppJsonViewer/NPPJSONViewer.vcxproj
index 07edaca..fe41d18 100644
--- a/src/NppJsonViewer/NPPJSONViewer.vcxproj
+++ b/src/NppJsonViewer/NPPJSONViewer.vcxproj
@@ -36,37 +36,37 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <UseDebugLibraries>true</UseDebugLibraries>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <UseDebugLibraries>true</UseDebugLibraries>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <UseDebugLibraries>true</UseDebugLibraries>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
diff --git a/src/UtilityLib/UtilityLib.vcxproj b/src/UtilityLib/UtilityLib.vcxproj
index 71aad8d..bec2768 100644
--- a/src/UtilityLib/UtilityLib.vcxproj
+++ b/src/UtilityLib/UtilityLib.vcxproj
@@ -47,39 +47,39 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
diff --git a/tests/UnitTest/UnitTest.vcxproj b/tests/UnitTest/UnitTest.vcxproj
index fe65456..7019566 100644
--- a/tests/UnitTest/UnitTest.vcxproj
+++ b/tests/UnitTest/UnitTest.vcxproj
@@ -31,7 +31,7 @@
     <Keyword>Win32Proj</Keyword>
     <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
     <ConfigurationType>Application</ConfigurationType>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />