diff --git a/Google.PowerShell.Tests/Google.PowerShell.Tests.csproj b/Google.PowerShell.Tests/Google.PowerShell.Tests.csproj
index 399c79ab..578f09db 100644
--- a/Google.PowerShell.Tests/Google.PowerShell.Tests.csproj
+++ b/Google.PowerShell.Tests/Google.PowerShell.Tests.csproj
@@ -35,8 +35,8 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="BouncyCastle.Crypto, Version=1.8.1.0, Culture=neutral, PublicKeyToken=0e99375e54769942">
-      <HintPath>..\packages\BouncyCastle.1.8.1\lib\BouncyCastle.Crypto.dll</HintPath>
+    <Reference Include="BouncyCastle.Crypto, Version=1.8.9.0, Culture=neutral, PublicKeyToken=0e99375e54769942">
+      <HintPath>..\packages\BouncyCastle.1.8.9\lib\BouncyCastle.Crypto.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Castle.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc, processorArchitecture=MSIL">
diff --git a/Google.PowerShell.Tests/packages.config b/Google.PowerShell.Tests/packages.config
index 0d26e71e..f2ef1487 100644
--- a/Google.PowerShell.Tests/packages.config
+++ b/Google.PowerShell.Tests/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="BouncyCastle" version="1.8.1" targetFramework="net452" />
+  <package id="BouncyCastle" version="1.8.9" targetFramework="net452" />
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Google.Api.Gax" version="2.1.0" targetFramework="net452" />
   <package id="Google.Api.Gax.Rest" version="2.1.0" targetFramework="net452" />
diff --git a/Google.PowerShell/Google.PowerShell.csproj b/Google.PowerShell/Google.PowerShell.csproj
index 3f20300e..977c579f 100644
--- a/Google.PowerShell/Google.PowerShell.csproj
+++ b/Google.PowerShell/Google.PowerShell.csproj
@@ -34,8 +34,8 @@
     <DocumentationFile>bin\Release\Google.PowerShell.XML</DocumentationFile>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="BouncyCastle.Crypto, Version=1.8.1.0, Culture=neutral, PublicKeyToken=0e99375e54769942">
-      <HintPath>..\packages\BouncyCastle.1.8.1\lib\BouncyCastle.Crypto.dll</HintPath>
+    <Reference Include="BouncyCastle.Crypto, Version=1.8.9.0, Culture=neutral, PublicKeyToken=0e99375e54769942">
+      <HintPath>..\packages\BouncyCastle.1.8.9\lib\BouncyCastle.Crypto.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="Google.Api.Gax, Version=2.1.0.0, Culture=neutral, PublicKeyToken=3ec5ea7f18953e47, processorArchitecture=MSIL">