diff --git a/appveyor.yml b/appveyor.yml
index 58d179ca..699b1c0d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,9 +5,6 @@
 # version format
 version: '{build}'
 
-# do not build on tags (GitHub and BitBucket)
-skip_tags: true
-
 #---------------------------------#
 #    environment configuration    #
 #---------------------------------#
@@ -15,6 +12,11 @@ skip_tags: true
 # build worker image (VM template)
 image: Visual Studio 2017
 
+# environment variables
+environment:
+  NUGET_API_KEY:
+    secure: 8PQpunzi9jRouQhHpoxy7d1vsM58SmWeiDRab2B8y8/BFWCBDxHeVb+TxBWrgFHJ
+
 #---------------------------------#
 #       build configuration       #
 #---------------------------------#
diff --git a/build/build.ps1 b/build/build.ps1
index 5d1f9bc1..6ffddc5d 100644
--- a/build/build.ps1
+++ b/build/build.ps1
@@ -6,7 +6,9 @@ Write-Host "build: dotnet cli v$(dotnet --version)"
 
 Push-Location $PSScriptRoot\..
 
-if (Test-Path .\artifacts) {
+# Clean artifacts
+if (Test-Path .\artifacts)
+{
     Write-Host "build: Cleaning .\artifacts"
     Remove-Item .\artifacts -Force -Recurse
 }
@@ -18,26 +20,35 @@ $suffix = @{ $true = ""; $false = "$branch-$revision"}[$branch -eq "master" -and
 
 Write-Host "build: Version suffix is '$suffix'"
 
-foreach ($src in Get-ChildItem src/*) {
-    Push-Location $src
+# Build and pack
+foreach ($source in Get-ChildItem .\src\*)
+{
+    Push-Location $source
 
-    Write-Host "build: Packaging project in $src"
+    Write-Host "build: Packaging project in $source"
 
     if ($suffix -eq "")
     {
         & dotnet build -c Release
         & dotnet pack -c Release --include-symbols -o ..\..\artifacts --no-build
     }
-    else {
+    else
+    {
         & dotnet build -c Release --version-suffix=$suffix
         & dotnet pack -c Release --include-symbols -o ..\..\artifacts --version-suffix=$suffix --no-build
     }
-    if ($LASTEXITCODE -ne 0) { exit 1 }    
+    
+    if ($LASTEXITCODE -ne 0)
+    {
+        exit 1
+    }    
 
     Pop-Location
 }
 
-foreach ($test in Get-ChildItem test/*Tests) {
+# Test
+foreach ($test in Get-ChildItem test/*Tests)
+{
     Push-Location $test
 
     Write-Host "build: Testing project in $test"
@@ -48,4 +59,19 @@ foreach ($test in Get-ChildItem test/*Tests) {
     Pop-Location
 }
 
+# Push
+if ($env:APPVEYOR_REPO_TAG -eq "true")
+{
+    Write-Host "build: push package to www.nuget.org"
+
+    Push-Location .\artifacts
+
+    foreach ($package in Get-ChildItem *.nupkg -Exclude *.symbols.nupkg)
+    {
+        & dotnet nuget push $package --source https://www.nuget.org/api/v2/package --api-key $NUGET_API_KEY
+    }
+
+    Pop-Location
+}
+
 Pop-Location