diff --git a/docs/install.md b/docs/install.md
index 49365b98..108dddce 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -1,22 +1,22 @@
# Installation
NSec is available as
-[a NuGet package from nuget.org](https://www.nuget.org/packages/NSec.Cryptography/19.5.0).
+[a NuGet package from nuget.org](https://www.nuget.org/packages/NSec.Cryptography/19.12.0-preview1).
It can be added to a project in a number of ways, depending on the project type
and tools used:
#### dotnet CLI
- $ dotnet add package NSec.Cryptography --version 19.5.0
+ $ dotnet add package NSec.Cryptography --version 19.12.0-preview1
#### Visual Studio
- PM> Install-Package NSec.Cryptography -Version 19.5.0
+ PM> Install-Package NSec.Cryptography -Version 19.12.0-preview1
#### .csproj
-
+
## Supported Languages
diff --git a/index.md b/index.md
index ada07198..b39cee61 100644
--- a/index.md
+++ b/index.md
@@ -43,7 +43,7 @@ and verify the signature:
## Installation
- $ dotnet add package NSec.Cryptography --version 19.5.0
+ $ dotnet add package NSec.Cryptography --version 19.12.0-preview1
NSec works with .NET Core 3.1, 3.0 and 2.1 on Windows, Linux and Mac.
See [[Installation]] for additional information.
diff --git a/src/Package.props b/src/Package.props
index d983f728..6c3431df 100644
--- a/src/Package.props
+++ b/src/Package.props
@@ -12,6 +12,7 @@
+ 19.12.0-preview1
$([System.DateTime]::UtcNow.ToString(y.M.0))-preview1-$(BuildNumberMajor)-$(BuildNumberMinor)