diff --git a/ci/x86_64-windows-debug.ps1 b/ci/x86_64-windows-debug.ps1
index 6cd28db466..9349a74547 100644
--- a/ci/x86_64-windows-debug.ps1
+++ b/ci/x86_64-windows-debug.ps1
@@ -95,7 +95,7 @@ Enter-VsDevShell -VsInstallPath "C:\Program Files (x86)\Microsoft Visual Studio\
 CheckLastExitCode
 
 Write-Output "Build and run behavior tests with msvc..."
-& cl.exe -I..\lib test-x86_64-windows-msvc.c compiler_rt-x86_64-windows-msvc.c /W3 /Z7 -link -nologo -debug -subsystem:console kernel32.lib ntdll.lib libcmt.lib
+& cl.exe -I..\lib test-x86_64-windows-msvc.c compiler_rt-x86_64-windows-msvc.c /W3 /Z7 -link -nologo -debug -subsystem:console kernel32.lib ntdll.lib libcmt.lib ws2_32.lib
 CheckLastExitCode
 
 & .\test-x86_64-windows-msvc.exe
diff --git a/ci/x86_64-windows-release.ps1 b/ci/x86_64-windows-release.ps1
index f3cdd66f48..a348c72fe9 100644
--- a/ci/x86_64-windows-release.ps1
+++ b/ci/x86_64-windows-release.ps1
@@ -113,7 +113,7 @@ Enter-VsDevShell -VsInstallPath "C:\Program Files (x86)\Microsoft Visual Studio\
 CheckLastExitCode
 
 Write-Output "Build and run behavior tests with msvc..."
-& cl.exe -I..\lib test-x86_64-windows-msvc.c compiler_rt-x86_64-windows-msvc.c /W3 /Z7 -link -nologo -debug -subsystem:console kernel32.lib ntdll.lib libcmt.lib
+& cl.exe -I..\lib test-x86_64-windows-msvc.c compiler_rt-x86_64-windows-msvc.c /W3 /Z7 -link -nologo -debug -subsystem:console kernel32.lib ntdll.lib libcmt.lib ws2_32.lib
 CheckLastExitCode
 
 & .\test-x86_64-windows-msvc.exe