diff --git a/OpenXmlFormats/NPOI.OpenXmlFormats.Core.csproj b/OpenXmlFormats/NPOI.OpenXmlFormats.Core.csproj
index 7c5c2eca2..d42848f4d 100644
--- a/OpenXmlFormats/NPOI.OpenXmlFormats.Core.csproj
+++ b/OpenXmlFormats/NPOI.OpenXmlFormats.Core.csproj
@@ -12,6 +12,10 @@
     <OutputPath>..\solution\Lib</OutputPath>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|netstandard2.0|AnyCPU'">
+    <DocumentationFile></DocumentationFile>
+  </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\main\NPOI.Core.csproj" />
     <ProjectReference Include="..\openxml4Net\NPOI.OpenXml4Net.Core.csproj" />
diff --git a/ooxml/NPOI.OOXML.csproj b/ooxml/NPOI.OOXML.csproj
index b78cb0ab8..9c9094cf3 100644
--- a/ooxml/NPOI.OOXML.csproj
+++ b/ooxml/NPOI.OOXML.csproj
@@ -82,6 +82,12 @@
     <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="BouncyCastle.Crypto, Version=1.8.6.0, Culture=neutral, PublicKeyToken=0e99375e54769942, processorArchitecture=MSIL">
+      <HintPath>..\solution\packages\Portable.BouncyCastle.1.8.6\lib\net40\BouncyCastle.Crypto.dll</HintPath>
+    </Reference>
+    <Reference Include="ICSharpCode.SharpZipLib, Version=1.3.1.9, Culture=neutral, PublicKeyToken=1b03e6acf1164f73, processorArchitecture=MSIL">
+      <HintPath>..\solution\packages\SharpZipLib.1.3.1\lib\net45\ICSharpCode.SharpZipLib.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
diff --git a/ooxml/packages.config b/ooxml/packages.config
index 7b9c61c4d..d460d74a6 100644
--- a/ooxml/packages.config
+++ b/ooxml/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Portable.BouncyCastle" version="1.8.6" targetFramework="net45" />
-  <package id="SharpZipLib" version="1.3.2" targetFramework="net45" />
+  <package id="SharpZipLib" version="1.3.1" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/openxml4Net/NPOI.OpenXml4Net.csproj b/openxml4Net/NPOI.OpenXml4Net.csproj
index 3342421de..48f9d2b45 100644
--- a/openxml4Net/NPOI.OpenXml4Net.csproj
+++ b/openxml4Net/NPOI.OpenXml4Net.csproj
@@ -82,6 +82,9 @@
     <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="ICSharpCode.SharpZipLib, Version=1.3.1.9, Culture=neutral, PublicKeyToken=1b03e6acf1164f73, processorArchitecture=MSIL">
+      <HintPath>..\solution\packages\SharpZipLib.1.3.1\lib\net45\ICSharpCode.SharpZipLib.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />