diff --git a/BUILD.md b/BUILD.md
index 588685d0..31c88c4f 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -98,7 +98,7 @@ Download and install the 32-bit [Visual C++ Redistributable for Visual Studio 20
 
 Download and install the standalone [Windows 10 SDK](https://dev.windows.com/en-us/downloads/windows-10-sdk). Note that you may not need this if you already have Visual Studio. Add the following directories to the path:
 
-* `C:\Program Files (x86)\Windows Kits\10\bin\x86`
+* `C:\Program Files (x86)\Windows Kits\10\bin\10.0.16299.0\x86`
 * `C:\Program Files (x86)\Windows Kits\10\Redist\ucrt\DLLs\x86`
 * `C:\Users\user\AppData\Local\Programs\Python\Python36-32\Lib\site-packages\PyQt5\Qt\bin`
 
diff --git a/install/build_exe.bat b/install/build_exe.bat
index fe15c8f2..6c49c7d8 100644
--- a/install/build_exe.bat
+++ b/install/build_exe.bat
@@ -8,10 +8,10 @@ REM download tor
 python install\get-tor-windows.py
 
 REM sign onionshare-gui.exe
-signtool.exe sign /v /d "OnionShare" /a /tr http://timestamp.globalsign.com/scripts/timstamp.dll /fd sha256 dist\onionshare\onionshare-gui.exe
+signtool.exe sign /v /d "OnionShare" /a /tr http://time.certum.pl/ /fd sha256 dist\onionshare\onionshare-gui.exe
 
 REM build an installer, dist\onionshare-setup.exe
 makensis.exe install\onionshare.nsi
 
 REM sign onionshare-setup.exe
-signtool.exe sign /v /d "OnionShare" /a /tr http://timestamp.globalsign.com/scripts/timstamp.dll /fd sha256 dist\onionshare-setup.exe
+signtool.exe sign /v /d "OnionShare" /a /tr http://time.certum.pl/ /fd sha256 dist\onionshare-setup.exe
diff --git a/install/onionshare.nsi b/install/onionshare.nsi
index f12c6190..03830909 100644
--- a/install/onionshare.nsi
+++ b/install/onionshare.nsi
@@ -39,7 +39,7 @@ ${EndIf}
     !echo "Creating normal installer"
     !system "makensis.exe /DINNER onionshare.nsi" = 0
     !system "$%TEMP%\tempinstaller.exe" = 2
-    !system "signtool.exe sign /v /d $\"Uninstall OnionShare$\" /a /tr http://timestamp.globalsign.com/scripts/timstamp.dll /fd sha256 $%TEMP%\uninstall.exe" = 0
+    !system "signtool.exe sign /v /d $\"Uninstall OnionShare$\" /a /tr http://time.certum.pl/ /fd sha256 $%TEMP%\uninstall.exe" = 0
 
     # all done, now we can build the real installer
     OutFile "..\dist\onionshare-setup.exe"