diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ffcd8c8..7810aa7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,7 +33,7 @@ jobs:
         vs-version: ${{ matrix.vs-version }}
       
     - name: Find And Replace Values (App Config)
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}\GmailAPIHelper.NET.Tests\App.config'
         replacements: '__GMAILID__=${{ secrets.GMAIL_ID }}'
@@ -44,13 +44,13 @@ jobs:
         msbuild GmailAPIHelper.sln /p:configuration=Release /p:DeployExtension=false /p:ZipPackageCompressionLevel=normal /v:m
 
     - name: Find And Replace Values (OAuth)
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}\GmailAPIHelper.NET.Tests\bin\Release\token.json\Google.Apis.Auth.OAuth2.Responses.TokenResponse-user'
         replacements: '__ACCESSTOKEN__=${{ secrets.ACCESS_TOKEN }}'
     
     - name: Find And Replace Values (Client Secret)
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}\GmailAPIHelper.NET.Tests\bin\Release\credentials.json'
         replacements: '__CLIENTSECRET__=${{ secrets.CLIENT_SECRET }}'
@@ -81,7 +81,7 @@ jobs:
         dotnet-version: ${{ matrix.dotnet-version }}
         
     - name: Find And Replace Values (App Config)
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/App.config'
         replacements: '__GMAILID__=${{ secrets.GMAIL_ID }}'
@@ -91,14 +91,14 @@ jobs:
 
     - name: Find And Replace Values (OAuth)
       if: ${{ matrix.dotnet-version == 'N/A' }}
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/bin/Release/netcoreapp3.1/token.json/Google.Apis.Auth.OAuth2.Responses.TokenResponse-user'
         replacements: '__ACCESSTOKEN__=${{ secrets.ACCESS_TOKEN }}'
 
     - name: Find And Replace Values (Client Secret)
       if: ${{ matrix.dotnet-version == 'N/A' }}
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/bin/Release/netcoreapp3.1/credentials.json'
         replacements: '__CLIENTSECRET__=${{ secrets.CLIENT_SECRET }}'
@@ -126,7 +126,7 @@ jobs:
         dotnet-version: ${{ matrix.dotnet-version }}
         
     - name: Find And Replace Values (App Config)
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/App.config'
         replacements: '__GMAILID__=${{ secrets.GMAIL_ID }}'
@@ -136,14 +136,14 @@ jobs:
 
     - name: Find And Replace Values (OAuth)
       if: ${{ matrix.dotnet-version == '3.1.x' }}
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/bin/Release/netcoreapp3.1/token.json/Google.Apis.Auth.OAuth2.Responses.TokenResponse-user'
         replacements: '__ACCESSTOKEN__=${{ secrets.ACCESS_TOKEN }}'
 
     - name: Find And Replace Values (Client Secret)
       if: ${{ matrix.dotnet-version == '3.1.x' }}
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/bin/Release/netcoreapp3.1/credentials.json'
         replacements: '__CLIENTSECRET__=${{ secrets.CLIENT_SECRET }}'
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 25aa619..5fdd552 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -23,7 +23,7 @@ jobs:
         dotnet-version: ${{ matrix.dotnet-version }}
         
     - name: Find And Replace Values (App Config)
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/App.config'
         replacements: '__GMAILID__=${{ secrets.GMAIL_ID }}'
@@ -33,14 +33,14 @@ jobs:
 
     - name: Find And Replace Values (OAuth)
       if: ${{ matrix.dotnet-version == '3.1.x' }}
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/bin/Release/netcoreapp3.1/token.json/Google.Apis.Auth.OAuth2.Responses.TokenResponse-user'
         replacements: '__ACCESSTOKEN__=${{ secrets.ACCESS_TOKEN }}'
 
     - name: Find And Replace Values (Client Secret)
       if: ${{ matrix.dotnet-version == '3.1.x' }}
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/bin/Release/netcoreapp3.1/credentials.json'
         replacements: '__CLIENTSECRET__=${{ secrets.CLIENT_SECRET }}'
diff --git a/.github/workflows/publish-nuget-Package.yml b/.github/workflows/publish-nuget-Package.yml
index 4feb63a..c6bb1d8 100644
--- a/.github/workflows/publish-nuget-Package.yml
+++ b/.github/workflows/publish-nuget-Package.yml
@@ -1,7 +1,7 @@
 name: Publish Nuget Package
 
 env:
-    NUGET_PACKAGE_NAME_VERSION: "GmailHelper.1.9.25.nupkg"
+    NUGET_PACKAGE_NAME_VERSION: "GmailHelper.1.9.26.nupkg"
 
 on:
   workflow_dispatch:
diff --git a/.github/workflows/testcleanup.yml b/.github/workflows/testcleanup.yml
index f716bcb..b489d84 100644
--- a/.github/workflows/testcleanup.yml
+++ b/.github/workflows/testcleanup.yml
@@ -27,7 +27,7 @@ jobs:
         dotnet-version: ${{ matrix.dotnet-version }}
         
     - name: Find And Replace Values (App Config)
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/App.config'
         replacements: '__GMAILID__=${{ secrets.GMAIL_ID }}'
@@ -37,14 +37,14 @@ jobs:
       
     - name: Find And Replace Values (OAuth)
       if: ${{ matrix.dotnet-version == '3.1.x' }}
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/bin/Release/netcoreapp3.1/token.json/Google.Apis.Auth.OAuth2.Responses.TokenResponse-user'
         replacements: '__ACCESSTOKEN__=${{ secrets.ACCESS_TOKEN }}'
 
     - name: Find And Replace Values (Client Secret)
       if: ${{ matrix.dotnet-version == '3.1.x' }}
-      uses: abhinavminhas/replace-tokens@v1.0
+      uses: abhinavminhas/replace-tokens@main
       with:
         files: '${{ github.workspace }}/GmailAPIHelper.CORE.Tests/bin/Release/netcoreapp3.1/credentials.json'
         replacements: '__CLIENTSECRET__=${{ secrets.CLIENT_SECRET }}'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0a3c635..58d7a39 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@ All notable changes to this project documented here.
 
 ## [Released]
 
+## [1.9.26](https://www.nuget.org/packages/GmailHelper/1.9.26) - 2024-04-28
+### Changed
+- Gmail API dependency update ('1.67.0.3287' -> '1.68.0.3287').
+
 ## [1.9.25](https://www.nuget.org/packages/GmailHelper/1.9.25) - 2024-04-20
 ### Changed
 - MimeKitLite dependency update from ('4.4.0' -> '4.5.0').
diff --git a/GmailAPIHelper.NET.Tests/GmailAPIHelper.NET.Tests.csproj b/GmailAPIHelper.NET.Tests/GmailAPIHelper.NET.Tests.csproj
index 5da0995..6202887 100644
--- a/GmailAPIHelper.NET.Tests/GmailAPIHelper.NET.Tests.csproj
+++ b/GmailAPIHelper.NET.Tests/GmailAPIHelper.NET.Tests.csproj
@@ -41,17 +41,17 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Google.Apis, Version=1.67.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
-      <HintPath>..\packages\Google.Apis.1.67.0\lib\netstandard2.0\Google.Apis.dll</HintPath>
+    <Reference Include="Google.Apis, Version=1.68.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Apis.1.68.0\lib\netstandard2.0\Google.Apis.dll</HintPath>
     </Reference>
-    <Reference Include="Google.Apis.Auth, Version=1.67.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
-      <HintPath>..\packages\Google.Apis.Auth.1.67.0\lib\netstandard2.0\Google.Apis.Auth.dll</HintPath>
+    <Reference Include="Google.Apis.Auth, Version=1.68.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Apis.Auth.1.68.0\lib\netstandard2.0\Google.Apis.Auth.dll</HintPath>
     </Reference>
-    <Reference Include="Google.Apis.Core, Version=1.67.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
-      <HintPath>..\packages\Google.Apis.Core.1.67.0\lib\netstandard2.0\Google.Apis.Core.dll</HintPath>
+    <Reference Include="Google.Apis.Core, Version=1.68.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Apis.Core.1.68.0\lib\netstandard2.0\Google.Apis.Core.dll</HintPath>
     </Reference>
-    <Reference Include="Google.Apis.Gmail.v1, Version=1.67.0.3287, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
-      <HintPath>..\packages\Google.Apis.Gmail.v1.1.67.0.3287\lib\netstandard2.0\Google.Apis.Gmail.v1.dll</HintPath>
+    <Reference Include="Google.Apis.Gmail.v1, Version=1.68.0.3287, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
+      <HintPath>..\packages\Google.Apis.Gmail.v1.1.68.0.3287\lib\netstandard2.0\Google.Apis.Gmail.v1.dll</HintPath>
     </Reference>
     <Reference Include="Microsoft.VisualStudio.TestPlatform.TestFramework, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
       <HintPath>..\packages\MSTest.TestFramework.2.2.8\lib\net45\Microsoft.VisualStudio.TestPlatform.TestFramework.dll</HintPath>
diff --git a/GmailAPIHelper.NET.Tests/packages.config b/GmailAPIHelper.NET.Tests/packages.config
index 2ed4ced..e071ed8 100644
--- a/GmailAPIHelper.NET.Tests/packages.config
+++ b/GmailAPIHelper.NET.Tests/packages.config
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Apis" version="1.67.0" targetFramework="net461" />
-  <package id="Google.Apis.Auth" version="1.67.0" targetFramework="net461" />
-  <package id="Google.Apis.Core" version="1.67.0" targetFramework="net461" />
-  <package id="Google.Apis.Gmail.v1" version="1.67.0.3287" targetFramework="net461" />
+  <package id="Google.Apis" version="1.68.0" targetFramework="net461" />
+  <package id="Google.Apis.Auth" version="1.68.0" targetFramework="net461" />
+  <package id="Google.Apis.Core" version="1.68.0" targetFramework="net461" />
+  <package id="Google.Apis.Gmail.v1" version="1.68.0.3287" targetFramework="net461" />
   <package id="MimeKitLite" version="4.5.0" targetFramework="net461" />
   <package id="MSTest.TestAdapter" version="2.2.8" targetFramework="net461" />
   <package id="MSTest.TestFramework" version="2.2.8" targetFramework="net461" />
diff --git a/GmailAPIHelper/GmailAPIHelper.csproj b/GmailAPIHelper/GmailAPIHelper.csproj
index 2ea4da8..6df6da4 100644
--- a/GmailAPIHelper/GmailAPIHelper.csproj
+++ b/GmailAPIHelper/GmailAPIHelper.csproj
@@ -30,12 +30,12 @@ Solution Version:
     <PackageId>GmailHelper</PackageId>
     <RepositoryType>git</RepositoryType>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
-    <PackageReleaseNotes>1. MimeKitLite dependency update from ('4.4.0' -&gt; '4.5.0').</PackageReleaseNotes>
-    <Version>1.9.25</Version>
+    <PackageReleaseNotes>1. Gmail API dependency update ('1.67.0.3287' -&gt; '1.68.0.3287').</PackageReleaseNotes>
+    <Version>1.9.26</Version>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Apis.Gmail.v1" Version="1.67.0.3287" />
+    <PackageReference Include="Google.Apis.Gmail.v1" Version="1.68.0.3287" />
     <PackageReference Include="MimeKitLite" Version="4.5.0" />
   </ItemGroup>