diff --git a/master/custom/builders.py b/master/custom/builders.py
index ee462d93..de67287a 100644
--- a/master/custom/builders.py
+++ b/master/custom/builders.py
@@ -115,7 +115,8 @@ def get_builders(settings):
         ("AMD64 FreeBSD Non-Debug", "koobs-freebsd-9e36", SlowNonDebugUnixBuild, STABLE),
         ("AMD64 FreeBSD Shared", "koobs-freebsd-564d", SlowSharedUnixBuild, STABLE),
         # Windows
-        ("AMD64 Windows7 SP1", "kloth-win64", Windows64Build, STABLE),
+        ("AMD64 Windows10 Pro", "kloth-win64", Windows64Build, STABLE),
+        ("AMD64 Windows7 SP1", "kloth-win7", Windows64Build, STABLE),
         ("AMD64 Windows10", "bolen-windows10", Windows64Build, STABLE),
         ("AMD64 Windows8.1 Non-Debug", "ware-win81-release", Windows64ReleaseBuild, STABLE),
         ("AMD64 Windows8.1 Refleaks", "ware-win81-release", Windows64RefleakBuild, STABLE),
diff --git a/master/custom/workers.py b/master/custom/workers.py
index 7a7fe810..c4bff2a9 100644
--- a/master/custom/workers.py
+++ b/master/custom/workers.py
@@ -211,9 +211,13 @@ def get_workers(settings):
         ),
         cpw(
             name="kloth-win64",
+            tags=['windows', 'win10', 'amd64', 'x86-64'],
+            parallel_tests=8,
+        ),
+        cpw(
+            name="kloth-win7",
             tags=['windows', 'win7', 'amd64', 'x86-64'],
-            parallel_builders=2,
-            parallel_tests=4,
+            parallel_tests=6,
         ),
         cpw(
             name="koobs-freebsd-9e36",