diff --git a/tools/internal_ci/windows/grpc_build_artifacts.bat b/tools/internal_ci/windows/grpc_build_artifacts.bat
index 29c876dd353..17d9571d43e 100644
--- a/tools/internal_ci/windows/grpc_build_artifacts.bat
+++ b/tools/internal_ci/windows/grpc_build_artifacts.bat
@@ -26,7 +26,7 @@ cd /d %~dp0\..\..\..
 
 call tools/internal_ci/helper_scripts/prepare_build_windows.bat
 
-python tools/run_tests/task_runner.py -f artifact windows || goto :error
+python tools/run_tests/task_runner.py -f artifact windows -j 4 || goto :error
 goto :EOF
 
 :error
diff --git a/tools/run_tests/artifacts/artifact_targets.py b/tools/run_tests/artifacts/artifact_targets.py
index bd186263ca6..12263282ae0 100644
--- a/tools/run_tests/artifacts/artifact_targets.py
+++ b/tools/run_tests/artifacts/artifact_targets.py
@@ -150,6 +150,7 @@ class PythonArtifact:
                              self.py_version,
                              '32' if self.arch == 'x86' else '64'],
                             environ=environ,
+                            timeout_seconds=45*60,
                             use_workspace=True)
     else:
       environ['PYTHON'] = self.py_version
@@ -257,6 +258,7 @@ class NodeExtArtifact:
                             ['tools\\run_tests\\artifacts\\build_artifact_node.bat',
                              self.gyp_arch],
                             use_workspace=True,
+                            timeout_seconds=45*60,
                             cpu_cost=cpu_cost)
     else:
       if self.platform == 'linux':