diff --git a/appveyor.yml b/appveyor.yml
index d41d2e3..d443c5d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -34,7 +34,7 @@ build_script:
   - cmd: msbuild ./Capnp.Net.sln /p:Configuration="Release"
   - cmd: msbuild ./CapnpCompatTest.sln /p:Configuration="Debug"
   - cmd: msbuild ./CapnpCompatTest.sln /p:Configuration="Release"
-  - ps: scripts\capnpc-csharp-pack.ps1
+  - ps: scripts\capnpc-csharp-pack.ps1 $(appveyor_build_version)
 after_build:
   # For once the build has completed
 artifacts:
@@ -44,10 +44,10 @@ artifacts:
  - path: Capnp.Net.Runtime\bin\Release
    name: Capnp.Net.Runtime
    type: NuGetPackage
- - path: chocolatey\install\capnpc-csharp-win-x86.{version}.nupkg
+ - path: chocolatey\install\capnpc-csharp-win-x86.$(appveyor_build_version).nupkg
    name: capnpc-csharp-win-x86
    type: NuGetPackage
- - path: chocolatey\install\capnpc-csharp.{version}.nupkg
+ - path: chocolatey\install\capnpc-csharp.$(appveyor_build_version).nupkg
    name: capnpc-csharp
    type: NuGetPackage
 clone_depth: 1
diff --git a/scripts/capnpc-csharp-pack.ps1 b/scripts/capnpc-csharp-pack.ps1
index 62c7e26..d012bd8 100644
--- a/scripts/capnpc-csharp-pack.ps1
+++ b/scripts/capnpc-csharp-pack.ps1
@@ -1,3 +1,5 @@
+param($version)
+
 $id = "capnpc-csharp"
 $id_win_x86 = "capnpc-csharp-win-x86"
 $scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
@@ -15,5 +17,5 @@ If(!(test-path $installDir))
       New-Item -ItemType Directory -Force -Path $installDir
 }
 
-choco pack "$chocoDir\$id\$id.nuspec" --outputdirectory $installDir
-choco pack "$chocoDir\$id_win_x86\$id_win_x86.nuspec" --outputdirectory $installDir
+choco pack "$chocoDir\$id\$id.nuspec" --version $version --outputdirectory $installDir
+choco pack "$chocoDir\$id_win_x86\$id_win_x86.nuspec" --version $version --outputdirectory $installDir