diff --git a/.github/workflows/update-powershell-dependencies.yml b/.github/workflows/update-powershell-dependencies.yml
index e7ceeb9..0ad051d 100644
--- a/.github/workflows/update-powershell-dependencies.yml
+++ b/.github/workflows/update-powershell-dependencies.yml
@@ -10,11 +10,6 @@ on:
         required: true
         default: all
         type: string
-      allow_major_version_upgrade:
-        description: Allow dependencies to cross major-version boundaries
-        required: true
-        default: false
-        type: boolean
 
 permissions:
   contents: read
@@ -93,18 +88,11 @@ jobs:
       - name: Update dependencies
         shell: pwsh
         env:
-          ALLOW_MAJOR_VERSION_UPGRADE: ${{ inputs.allow_major_version_upgrade }}
           GITHUB_TOKEN: ${{ github.token }}
         run: |
-          $parameters = @{
-            RepositoryPath = './target'
-            ModuleName = '${{ matrix.target.module }}'
-          }
-          if ($env:ALLOW_MAJOR_VERSION_UPGRADE -eq 'true') {
-            $parameters.AllowMajorVersionUpgrade = $true
-          }
-
-          ./controller/dependency-updates/Update-RepositoryDependencies.ps1 @parameters
+          ./controller/dependency-updates/Update-RepositoryDependencies.ps1 `
+            -RepositoryPath './target' `
+            -ModuleName '${{ matrix.target.module }}'
 
       - name: Create or refresh pull request
         uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8.1.1
diff --git a/dependency-updates/README.md b/dependency-updates/README.md
index c92db3d..7998fef 100644
--- a/dependency-updates/README.md
+++ b/dependency-updates/README.md
@@ -32,4 +32,5 @@ The workflow requests a short-lived token for one target repository at a time.
 
 Run **PowerShell dependency updates** from the Actions page.
 Use `all` to process every configured repository or provide one repository name from `targets.json`.
-Scheduled runs preserve dependency major versions; manual runs can explicitly allow major upgrades.
+Scheduled and manual runs preserve dependency major versions. Major dependency upgrades are handled
+manually in the target repository so their compatibility changes can be reviewed together.
diff --git a/dependency-updates/Tests/Update-RepositoryDependencies.Tests.ps1 b/dependency-updates/Tests/Update-RepositoryDependencies.Tests.ps1
index 9f69544..b18b1cb 100644
--- a/dependency-updates/Tests/Update-RepositoryDependencies.Tests.ps1
+++ b/dependency-updates/Tests/Update-RepositoryDependencies.Tests.ps1
@@ -61,7 +61,7 @@ Describe 'Update-RepositoryDependencies' {
         } | Should -Not -Throw
     }
 
-    It 'passes the declared files and major-upgrade choice to Standards' {
+    It 'passes the declared files to Standards without enabling major upgrades' {
         $repositoryPath = Join-Path $TestDrive 'delegation'
         New-TestRepository -Path $repositoryPath
         Set-Content `
@@ -77,14 +77,13 @@ Describe 'Update-RepositoryDependencies' {
         $result = Invoke-RepositoryDependencyUpdate `
             -RepositoryPath $repositoryPath `
             -ModuleName TestModule `
-            -StandardsVersion '0.3.1' `
-            -AllowMajorVersionUpgrade
+            -StandardsVersion '0.3.1'
 
         $result.Changed | Should -BeTrue
         Should -Invoke Invoke-StandardsDependencyUpdate -Times 1 -ParameterFilter {
             $Parameters.BuildRequirementsPath -eq (Join-Path $repositoryPath 'Tools/build.requirements.psd1') -and
             $Parameters.ManifestPath -eq (Join-Path $repositoryPath 'TestModule/TestModule.psd1') -and
-            $Parameters.AllowMajorVersionUpgrade
+            -not $Parameters.ContainsKey('AllowMajorVersionUpgrade')
         }
     }
 
diff --git a/dependency-updates/Update-RepositoryDependencies.ps1 b/dependency-updates/Update-RepositoryDependencies.ps1
index a861be8..ef53bf6 100644
--- a/dependency-updates/Update-RepositoryDependencies.ps1
+++ b/dependency-updates/Update-RepositoryDependencies.ps1
@@ -12,10 +12,7 @@ param(
 
     [Parameter()]
     [ValidatePattern('^\d+\.\d+\.\d+$')]
-    [String]$StandardsVersion = '0.3.1',
-
-    [Parameter()]
-    [Switch]$AllowMajorVersionUpgrade
+    [String]$StandardsVersion = '0.3.1'
 )
 
 $ErrorActionPreference = 'Stop'
@@ -125,10 +122,7 @@ function Invoke-RepositoryDependencyUpdate {
         [String]$ModuleName,
 
         [Parameter(Mandatory)]
-        [String]$StandardsVersion,
-
-        [Parameter()]
-        [Switch]$AllowMajorVersionUpgrade
+        [String]$StandardsVersion
     )
 
     $resolvedRepositoryPath = (Resolve-Path -LiteralPath $RepositoryPath).ProviderPath
@@ -173,10 +167,9 @@ function Invoke-RepositoryDependencyUpdate {
     Import-Module AtlassianPS.Standards -RequiredVersion $StandardsVersion -Force -ErrorAction Stop
 
     $updateParameters = @{
-        BuildRequirementsPath    = $buildRequirementsPath
-        ManifestPath             = $manifestPath
-        AllowMajorVersionUpgrade = $AllowMajorVersionUpgrade
-        ErrorAction              = 'Stop'
+        BuildRequirementsPath = $buildRequirementsPath
+        ManifestPath          = $manifestPath
+        ErrorAction           = 'Stop'
     }
 
     $result = Invoke-StandardsDependencyUpdate -Parameters $updateParameters