diff --git a/appveyor.yml b/appveyor.yml
index e76ea6939..a98cdef08 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -17,7 +17,7 @@ environment:
 
 install:
   - nuget install secure-file -ExcludeVersion
-  - secure-file\tools\secure-file -decrypt package/deploy/slic3r-upload.rsa.appveyor.enc -secret %ENC_SECRET%
+  - secure-file\tools\secure-file -decrypt package/deploy/slic3r-upload.ppk.appveyor.enc -secret %ENC_SECRET%
   - ps: "& package/win/appveyor_preinstall.ps1"
 cache:
 - C:\Users\appveyor\boost.1.63.0.7z
diff --git a/package/deploy/slic3r-upload.ppk.enc b/package/deploy/slic3r-upload.ppk.enc
new file mode 100644
index 000000000..0bc2ead4f
Binary files /dev/null and b/package/deploy/slic3r-upload.ppk.enc differ
diff --git a/package/deploy/slic3r-upload.rsa.appveyor.enc b/package/deploy/slic3r-upload.rsa.appveyor.enc
deleted file mode 100644
index 88de6ae04..000000000
Binary files a/package/deploy/slic3r-upload.rsa.appveyor.enc and /dev/null differ
diff --git a/package/win/appveyor_deploy.ps1 b/package/win/appveyor_deploy.ps1
index 39d101c1a..b5f0a2525 100644
--- a/package/win/appveyor_deploy.ps1
+++ b/package/win/appveyor_deploy.ps1
@@ -3,7 +3,7 @@ cd package/win
 ./compile_wrapper.ps1 524 | Write-Output
 ./package_win32.ps1 524| Write-Output
 cd ../../
-& package/deploy/winscp.ps1 -dir win -key $BUILD_FOLDER/package/deploy/slic3r-upload.rsa.appveyor -file *.zip:
+& package/deploy/winscp.ps1 -dir win -key $BUILD_FOLDER/package/deploy/slic3r-upload.ppk.appveyor -file *.zip:
 
 if (!(Test-Path C:\project\slic3r\slic3r.par)) {
   Add-AppveyorCompilationMessage -Message "Failed to package!" -Category Error