diff --git a/appveyor.yml b/appveyor.yml
index cbf0d06..600508b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -12,7 +12,7 @@ install:
   - set PATH_COPY=%PATH%
   - set PATH=%PATH%;c:\tools\vcpkg\installed\x86-windows\tools\capnproto
   - cd %APPVEYOR_BUILD_FOLDER%
-  - dotnet tool install -g nbgv
+  - dotnet tool install -g nbgv --version 3.1.74
   - choco install reportgenerator.portable --version=4.5.6 --force -y
   - dotnet tool install -g coveralls.net --version 1.0.0
 init:
diff --git a/scripts/capnpc-csharp-pack.ps1 b/scripts/capnpc-csharp-pack.ps1
index 25c141b..e14cb5f 100644
--- a/scripts/capnpc-csharp-pack.ps1
+++ b/scripts/capnpc-csharp-pack.ps1
@@ -8,7 +8,6 @@ $csprojDir = "$scriptDir\..\capnpc-csharp"
 $csprojFile = "capnpc-csharp.csproj"
 $installDir = "$chocoDir\install"
 
-dotnet clean -c Release "$scriptDir\..\Capnp.Net.sln" --verbosity m
 dotnet build -c Release "$scriptDir\..\Capnp.Net.sln" --verbosity m
 dotnet publish -c Release -r win-x86 --self-contained -o "$chocoDir\$id_win_x86\bin" "$csprojDir\$csprojFile" --verbosity m
 # dotnet publish -c Release -o "$chocoDir\$id\bin" "$csprojDir\$csprojFile"