diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 9ff59aab..e600a647 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/devcontainers/dotnet:1-8.0-bookworm-slim AS dotnet
+FROM mcr.microsoft.com/devcontainers/dotnet:1-9.0-bookworm-slim AS dotnet
 
 #====================================================================
 
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f8d9ae38..3d3bf5c0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,10 +27,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v5
-      - name: Setup .NET SDK v8.0.x
+      - name: Setup .NET SDK v9.0.x
         uses: actions/setup-dotnet@v5
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 9.0.x
       - name: Code formating check
         run: |
           dotnet tool restore
@@ -133,10 +133,10 @@ jobs:
       run: brew install bison
 
     # .NET Setup (and also MSBuild for Windows).
-    - name: Setup .NET SDK v8.0.x
+    - name: Setup .NET SDK v9.0.x
       uses: actions/setup-dotnet@v5
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
     - name: Setup MSBuild
       if: runner.os == 'Windows'
       uses: microsoft/setup-msbuild@v2
@@ -200,10 +200,10 @@ jobs:
       run: |
         mkdir bin
         cp -rv artifacts/*-native-library/* bin/
-    - name: Setup .NET SDK v8.0.x
+    - name: Setup .NET SDK v9.0.x
       uses: actions/setup-dotnet@v5
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
     - name: Get version
       id: get-version
       shell: pwsh
@@ -254,11 +254,11 @@ jobs:
       with:
         dotnet-version: 6.0.x
     - name: Setup .NET SDK v8.0.x
+      if: matrix.dotnet == 'net8.0'
       uses: actions/setup-dotnet@v5
       with:
         dotnet-version: 8.0.x
     - name: Setup .NET SDK v9.0.x
-      if: matrix.dotnet == 'net9.0'
       uses: actions/setup-dotnet@v5
       with:
         dotnet-version: 9.0.x
@@ -327,10 +327,10 @@ jobs:
       with:
         name: nuget-package
         path: nuget
-    - name: Setup .NET SDK v8.0.x
+    - name: Setup .NET SDK v9.0.x
       uses: actions/setup-dotnet@v5
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
     # if version contains "-" treat it as pre-release
     # example: 1.0.0-beta1
     - name: Create release
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 875d0231..d72c009e 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -34,10 +34,10 @@ jobs:
         cd $VCPKG_INSTALLATION_ROOT
         ./bootstrap-vcpkg.sh
 
-    - name: Setup .NET SDK v8.0.x
+    - name: Setup .NET SDK v9.0.x
       uses: actions/setup-dotnet@v5
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
diff --git a/csharp.test/ParquetSharp.Test.csproj b/csharp.test/ParquetSharp.Test.csproj
index 5748dbda..f71c5e88 100644
--- a/csharp.test/ParquetSharp.Test.csproj
+++ b/csharp.test/ParquetSharp.Test.csproj
@@ -2,9 +2,9 @@
 
   <PropertyGroup>
     <TargetFrameworks>net8.0</TargetFrameworks>
-    <!-- Avoid building for older frameworks when testing locally. -->
+    <!-- Avoid building for other frameworks when testing locally. -->
     <!-- This is to speed up the build process and avoid errors when the required runtimes are not installed. -->
-    <TargetFrameworks Condition="'$(CI)' == 'true'">$(TargetFrameworks);netcoreapp3.1;net6.0;net7.0</TargetFrameworks>
+    <TargetFrameworks Condition="'$(CI)' == 'true'">$(TargetFrameworks);net6.0;net9.0</TargetFrameworks>
     <TargetFrameworks Condition="'$(CI)' == 'true' AND '$(OS)'=='Windows_NT'">$(TargetFrameworks);net472</TargetFrameworks>
     <LangVersion>9.0</LangVersion>
     <Nullable>enable</Nullable>
diff --git a/fsharp.test/ParquetSharp.Test.FSharp.fsproj b/fsharp.test/ParquetSharp.Test.FSharp.fsproj
index b896436d..b01f9064 100644
--- a/fsharp.test/ParquetSharp.Test.FSharp.fsproj
+++ b/fsharp.test/ParquetSharp.Test.FSharp.fsproj
@@ -2,9 +2,9 @@
 
   <PropertyGroup>
     <TargetFrameworks>net8.0</TargetFrameworks>
-    <!-- Avoid building for older frameworks when testing locally. -->
+    <!-- Avoid building for other frameworks when testing locally. -->
     <!-- This is to speed up the build process and avoid errors when the required runtimes are not installed. -->
-    <TargetFrameworks Condition="'$(CI)' == 'true'">$(TargetFrameworks);netcoreapp3.1;net6.0;net7.0</TargetFrameworks>
+    <TargetFrameworks Condition="'$(CI)' == 'true'">$(TargetFrameworks);net6.0;net9.0</TargetFrameworks>
     <TargetFrameworks Condition="'$(CI)' == 'true' AND '$(OS)'=='Windows_NT'">$(TargetFrameworks);net472</TargetFrameworks>
     <PlatformTarget Condition="'$(TargetFramework)'=='net472'">x64</PlatformTarget>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
diff --git a/global.json b/global.json
index f4129c86..fdad5fa6 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
     "sdk": {
-      "version": "8.0.100",
+      "version": "9.0.109",
       "rollForward": "latestMinor"
     }
   }