diff --git a/.github/workflows/README.md b/.github/workflows/README.md
index 65042c3..0c37005 100644
--- a/.github/workflows/README.md
+++ b/.github/workflows/README.md
@@ -69,6 +69,13 @@ Publishes NuGet packages to GitHub Package Registry.
 https://nuget.pkg.github.com/ClearMeasureLabs/index.json
 ```
 
+**Version Management:**
+- Package versions are automatically incremented using the format `1.0.{run_number}`
+- The `run_number` is provided by GitHub Actions and increments with each workflow run
+- This ensures each push to main creates unique package versions
+- If a duplicate version is detected, the workflow will fail with an error
+- The `--skip-duplicate` flag is NOT used to ensure version conflicts are caught early
+
 ##### 3. Publish Release to GitHub Packages
 
 Publishes release packages and attaches them to the GitHub release.
@@ -98,6 +105,7 @@ The workflows leverage the `src/build.ps1` PowerShell script for all build opera
 | `-Pack` | Create NuGet packages | ✅ Yes (pack step) |
 | `-PackOnly` | Only create packages | ✅ Yes (pack step) |
 | `-PackageOutputPath` | Package output directory | ✅ Yes (custom path) |
+| `-Version` | Version number for packages | ✅ Yes (1.0.{run_number}) |
 | `-Clean` | Clean before build | ❌ No (fresh checkout) |
 | `-VerboseOutput` | Verbose MSBuild output | ❌ No (uses defaults) |
 
diff --git a/.github/workflows/build-and-publish.yml b/.github/workflows/build-and-publish.yml
index 716ca54..78b4471 100644
--- a/.github/workflows/build-and-publish.yml
+++ b/.github/workflows/build-and-publish.yml
@@ -99,7 +99,9 @@ jobs:
       if: github.event_name == 'push' || github.event_name == 'release' || github.event_name == 'workflow_dispatch'
       run: |
         cd src
-        .\build.ps1 -Configuration Release -PackOnly -PackageOutputPath "${{ github.workspace }}/packages"
+        $version = "1.0.${{ github.run_number }}"
+        Write-Host "Creating packages with version: $version"
+        .\build.ps1 -Configuration Release -PackOnly -PackageOutputPath "${{ github.workspace }}/packages" -Version $version
       shell: pwsh
     
     - name: Upload NuGet packages
@@ -133,9 +135,18 @@ jobs:
     
     - name: Publish to GitHub Packages
       run: |
+        $hasError = $false
         Get-ChildItem -Path packages -Filter *.nupkg -Recurse | ForEach-Object {
           Write-Host "Publishing $($_.Name)..."
-          dotnet nuget push $_.FullName --api-key ${{ secrets.GITHUB_TOKEN }} --source "https://nuget.pkg.github.com/${{ github.repository_owner }}/index.json" --skip-duplicate
+          dotnet nuget push $_.FullName --api-key ${{ secrets.GITHUB_TOKEN }} --source "https://nuget.pkg.github.com/${{ github.repository_owner }}/index.json"
+          if ($LASTEXITCODE -ne 0) {
+            $hasError = $true
+            Write-Error "Failed to publish $($_.Name)"
+          }
+        }
+        if ($hasError) {
+          Write-Error "One or more packages failed to publish. This may indicate duplicate versions."
+          exit 1
         }
       shell: pwsh
     
@@ -173,9 +184,18 @@ jobs:
     
     - name: Publish to GitHub Packages
       run: |
+        $hasError = $false
         Get-ChildItem -Path packages -Filter *.nupkg -Recurse | ForEach-Object {
           Write-Host "Publishing release package $($_.Name)..."
-          dotnet nuget push $_.FullName --api-key ${{ secrets.GITHUB_TOKEN }} --source "https://nuget.pkg.github.com/${{ github.repository_owner }}/index.json" --skip-duplicate
+          dotnet nuget push $_.FullName --api-key ${{ secrets.GITHUB_TOKEN }} --source "https://nuget.pkg.github.com/${{ github.repository_owner }}/index.json"
+          if ($LASTEXITCODE -ne 0) {
+            $hasError = $true
+            Write-Error "Failed to publish $($_.Name)"
+          }
+        }
+        if ($hasError) {
+          Write-Error "One or more packages failed to publish. This may indicate duplicate versions."
+          exit 1
         }
       shell: pwsh
       env:
diff --git a/src/build.ps1 b/src/build.ps1
index 6d9e7a2..9cf316b 100644
--- a/src/build.ps1
+++ b/src/build.ps1
@@ -14,6 +14,8 @@
     Create NuGet packages for library projects
 .PARAMETER PackageOutputPath
     Output directory for NuGet packages. Default: ./artifacts/packages
+.PARAMETER Version
+    Version number for NuGet packages. Default: 0.0.999 for local builds
 .PARAMETER VerboseOutput
     Enable verbose output
 .PARAMETER EnableCodeCoverage
@@ -34,6 +36,8 @@
     .\build.ps1 -Pack
 .EXAMPLE
     .\build.ps1 -Pack -PackageOutputPath "C:\packages"
+.EXAMPLE
+    .\build.ps1 -Pack -Version "1.0.5"
 .EXAMPLE
     .\build.ps1 -EnableCodeCoverage -GenerateTestReport
 .EXAMPLE
@@ -53,6 +57,8 @@ param(
     
     [string]$PackageOutputPath,
     
+    [string]$Version = "0.0.999",
+    
     [switch]$VerboseOutput,
     
     [switch]$EnableCodeCoverage,
@@ -471,25 +477,31 @@ function Invoke-Pack {
         $packagesCreated = 0
         
         foreach ($project in $packProjects) {
-            $projectPath = Join-Path $scriptPath $project
-            if (Test-Path $projectPath) {
-                Write-Info "Packing $(Split-Path $project -Leaf)"
-                
-                $packArgs = @(
-                    "pack"
-                    $projectPath
-                    "--configuration", $Configuration
-                    "--no-build"
-                    "--no-restore"
-                    "--output", $PackageOutputPath
-                    "--verbosity", $verbosityLevel
-                )
-                
-                # Add include symbols option for Release builds
-                if ($Configuration -eq "Release") {
-                    $packArgs += "--include-symbols"
-                    $packArgs += "--include-source"
-                }
+            $projectPath = Join-Path $scriptPath $project
+            if (Test-Path $projectPath) {
+                Write-Info "Packing $(Split-Path $project -Leaf)"
+                
+                $packArgs = @(
+                    "pack"
+                    $projectPath
+                    "--configuration", $Configuration
+                    "--no-build"
+                    "--no-restore"
+                    "--output", $PackageOutputPath
+                    "--verbosity", $verbosityLevel
+                )
+                
+                # Add version if specified
+                if ($Version) {
+                    $packArgs += "-p:Version=$Version"
+                    Write-Info "Using version: $Version"
+                }
+                
+                # Add include symbols option for Release builds
+                if ($Configuration -eq "Release") {
+                    $packArgs += "--include-symbols"
+                    $packArgs += "--include-source"
+                }
                 
                 dotnet @packArgs