diff --git a/.github/workflows/dotnet-core.yml b/.github/workflows/dotnet-core.yml
index 2c00b249..e847d624 100644
--- a/.github/workflows/dotnet-core.yml
+++ b/.github/workflows/dotnet-core.yml
@@ -6,22 +6,24 @@ on:
     - stable
 
 jobs:
+
   build-windows:
     runs-on: windows-latest
     steps:
     - uses: actions/checkout@v1
-    - name: Build libsodium
+    - name: buildbase.bat
       run: buildbase.bat ..\vs2019\libsodium.sln 16
       working-directory: builds/msvc/build/
       shell: cmd
     - uses: actions/upload-artifact@v1
       with:
-        name: libsodium-win-x64
+        name: build-win-x64
         path: bin/x64/Release/v142/dynamic/libsodium.dll
     - uses: actions/upload-artifact@v1
       with:
-        name: libsodium-win-x86
+        name: build-win-x86
         path: bin/Win32/Release/v142/dynamic/libsodium.dll
+        
   build-linux-glibc:
     runs-on: ubuntu-latest
     container:
@@ -32,16 +34,21 @@ jobs:
         yum install -q -y centos-release-scl ca-certificates
         yum install -q -y devtoolset-7-gcc*
     - uses: actions/checkout@v1
-    - name: Build libsodium
-      run: |
-        scl enable devtoolset-7 './configure --disable-debug --prefix=$PWD/.libsodium-build'
-        scl enable devtoolset-7 'make && make check'
-        scl enable devtoolset-7 'make install'
-        scl enable devtoolset-7 'strip --strip-all .libsodium-build/lib/libsodium.so'
+    - name: configure
+      run: scl enable devtoolset-7 './configure --disable-debug --prefix=$PWD/.libsodium-build'
+    - name: make
+      run: scl enable devtoolset-7 'make'
+    - name: make check
+      run: scl enable devtoolset-7 'make check'
+    - name: make install
+      run: scl enable devtoolset-7 'make install'
+    - name: strip
+      run: scl enable devtoolset-7 'strip --strip-all .libsodium-build/lib/libsodium.so'
     - uses: actions/upload-artifact@v1
       with:
-        name: libsodium-linux-x64
+        name: build-linux-x64
         path: .libsodium-build/lib/libsodium.so
+        
   build-linux-musl:
     runs-on: ubuntu-latest
     container:
@@ -52,29 +59,38 @@ jobs:
         apk update
         apk add alpine-sdk ca-certificates
     - uses: actions/checkout@v1
-    - name: Build libsodium
-      run: |
-        ./configure --disable-debug --prefix=$PWD/.libsodium-build
-        make && make check
-        make install
-        strip --strip-all .libsodium-build/lib/libsodium.so
+    - name: configure
+      run: ./configure --disable-debug --prefix=$PWD/.libsodium-build
+    - name: make
+      run: make
+    - name: make check
+      run: make check
+    - name: make install
+      run: make install
+    - name: strip
+      run: strip --strip-all .libsodium-build/lib/libsodium.so
     - uses: actions/upload-artifact@v1
       with:
-        name: libsodium-linux-musl-x64
+        name: build-linux-musl-x64
         path: .libsodium-build/lib/libsodium.so
+        
   build-macos:
     runs-on: macos-latest
     steps:
     - uses: actions/checkout@v1
-    - name: Build libsodium
-      run: |
-        ./configure --disable-debug --prefix=$PWD/.libsodium-build
-        make && make check
-        make install
+    - name: configure
+      run: ./configure --disable-debug --prefix=$PWD/.libsodium-build
+    - name: make
+      run: make
+    - name: make check
+      run: make check
+    - name: make install
+      run: make install
     - uses: actions/upload-artifact@v1
       with:
-        name: libsodium-osx-x64
+        name: build-osx-x64
         path: .libsodium-build/lib/libsodium.dylib
+
   pack:
     runs-on: ubuntu-latest
     needs:
@@ -88,36 +104,60 @@ jobs:
       with:
         dotnet-version: 2.1.607
     - uses: actions/checkout@v1
+    - uses: actions/download-artifact@v1
+      with:
+        name: build-win-x64
+        path: .libsodium-pack/runtimes/win-x64/native/
+    - uses: actions/download-artifact@v1
+      with:
+        name: build-win-x86
+        path: .libsodium-pack/runtimes/win-x86/native/
+    - uses: actions/download-artifact@v1
+      with:
+        name: build-linux-x64
+        path: .libsodium-pack/runtimes/linux-x64/native/
+    - uses: actions/download-artifact@v1
+      with:
+        name: build-linux-musl-x64
+        path: .libsodium-pack/runtimes/linux-musl-x64/native/
+    - uses: actions/download-artifact@v1
+      with:
+        name: build-osx-x64
+        path: .libsodium-pack/runtimes/osx-x64/native/
     - name: Copy files
-      run: |
-        mkdir -p .libsodium-pack/
-        cp AUTHORS ChangeLog LICENSE packaging/dotnet-core/libsodium.pkgproj .libsodium-pack/
-    - uses: actions/download-artifact@v1
-      with:
-        name: libsodium-win-x64
-        path: .libsodium-pack/runtimes/win-x64/native/libsodium.dll
-    - uses: actions/download-artifact@v1
-      with:
-        name: libsodium-win-x86
-        path: .libsodium-pack/runtimes/win-x86/native/libsodium.dll
-    - uses: actions/download-artifact@v1
-      with:
-        name: libsodium-linux-x64
-        path: .libsodium-pack/runtimes/linux-x64/native/libsodium.so
-    - uses: actions/download-artifact@v1
-      with:
-        name: libsodium-linux-musl-x64
-        path: .libsodium-pack/runtimes/linux-musl-x64/native/libsodium.so
-    - uses: actions/download-artifact@v1
-      with:
-        name: libsodium-osx-x64
-        path: .libsodium-pack/runtimes/osx-x64/native/libsodium.dylib
-    - name: Pack
+      run: cp AUTHORS ChangeLog LICENSE packaging/dotnet-core/libsodium.pkgproj .libsodium-pack/
+    - name: Create NuGet package
       run: dotnet pack .libsodium-pack/libsodium.pkgproj
       env:
         DOTNET_CLI_TELEMETRY_OPTOUT: 1
         DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
     - uses: actions/upload-artifact@v1
       with:
-        name: libsodium.1.0.18.nupkg
+        name: nuget-package
         path: .libsodium-pack/libsodium.1.0.18.nupkg
+
+  test-ubuntu18_04:
+    runs-on: ubuntu-latest
+    needs: 
+    - pack
+    container:
+      image: mcr.microsoft.com/dotnet/core/sdk:3.1-bionic
+    env:
+      DOTNET_CLI_TELEMETRY_OPTOUT: 1
+      DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
+      DOTNET_SYSTEM_GLOBALIZATION_INVARIANT: 1
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/download-artifact@v1
+      with:
+        name: nuget-package
+        path: .libsodium-pack/
+    - name: dotnet new
+      run: dotnet new console -n Tests -o .libsodium-test/
+    - name: dotnet add package libsodium
+      run: dotnet add .libsodium-test/Tests.csproj package libsodium -s $PWD/.libsodium-pack
+    - name: Copy files
+      run: cp -f packaging/dotnet-core/test.cs .libsodium-test/Program.cs
+    - name: dotnet run
+      run: dotnet run
+      working-directory: .libsodium-test/
diff --git a/packaging/dotnet-core/libsodium.pkgproj b/packaging/dotnet-core/libsodium.pkgproj
index e85ff0cd..0efd1e09 100644
--- a/packaging/dotnet-core/libsodium.pkgproj
+++ b/packaging/dotnet-core/libsodium.pkgproj
@@ -31,7 +31,11 @@
     <Content Include="LICENSE" PackagePath="" />
     <Content Include="AUTHORS" PackagePath="" />
     <Content Include="ChangeLog" PackagePath="" />
-    <Content Include="runtimes\**\*.*" PackagePath="runtimes\" />
+    <Content Include="runtimes/win-x64/native/libsodium.dll" PackagePath="runtimes/win-x64/native/" />
+    <Content Include="runtimes/win-x86/native/libsodium.dll" PackagePath="runtimes/win-x86/native/" />
+    <Content Include="runtimes/linux-x64/native/libsodium.so" PackagePath="runtimes/linux-x64/native/" />
+    <Content Include="runtimes/linux-musl-x64/native/libsodium.so" PackagePath="runtimes/linux-musl-x64/native/" />
+    <Content Include="runtimes/osx-x64/native/libsodium.dylib" PackagePath="runtimes/osx-x64/native/" />
   </ItemGroup>
 
 </Project>
diff --git a/packaging/dotnet-core/test.cs b/packaging/dotnet-core/test.cs
new file mode 100644
index 00000000..33484825
--- /dev/null
+++ b/packaging/dotnet-core/test.cs
@@ -0,0 +1,43 @@
+using System;
+using System.Runtime.InteropServices;
+
+internal static class Program
+{
+    internal static int Main()
+    {
+        Console.WriteLine("sodium_version_string: {0}", Marshal.PtrToStringAnsi(sodium_version_string()));
+        Console.WriteLine("sodium_library_version_major: {0}", sodium_library_version_major());
+        Console.WriteLine("sodium_library_version_minor: {0}", sodium_library_version_minor());
+        Console.WriteLine("sodium_library_minimal: {0}", sodium_library_minimal());
+        int error = sodium_init();
+        Console.WriteLine("sodium_init: {0}", error);
+        if (error == 0)
+        {
+            randombytes_buf(out ulong buf, (UIntPtr)sizeof(ulong));
+            Console.WriteLine("randombytes_buf: 0x'{0:X8}'", buf);
+            Console.WriteLine("crypto_aead_aes256gcm_is_available: {0}", crypto_aead_aes256gcm_is_available());
+        }
+        return error == 0 ? 0 : 1;
+    }
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int crypto_aead_aes256gcm_is_available();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern void randombytes_buf(out ulong buf, UIntPtr size);
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int sodium_init();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int sodium_library_version_major();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int sodium_library_minimal();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int sodium_library_version_minor();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern IntPtr sodium_version_string();
+}