diff --git a/var/spack/repos/builtin/packages/py-jaxlib/package.py b/var/spack/repos/builtin/packages/py-jaxlib/package.py
index 7d0c8b99dae..d8def42008a 100644
--- a/var/spack/repos/builtin/packages/py-jaxlib/package.py
+++ b/var/spack/repos/builtin/packages/py-jaxlib/package.py
@@ -50,6 +50,16 @@ class PyJaxlib(PythonPackage, CudaPackage):
     def patch(self):
         self.tmp_path = tempfile.mkdtemp(prefix="spack")
         self.buildtmp = tempfile.mkdtemp(prefix="spack")
+        filter_file(
+            "build --spawn_strategy=standalone",
+            f"""
+# Limit CPU workers to spack jobs instead of using all HOST_CPUS.
+build --spawn_strategy=standalone
+build --local_cpu_resources={make_jobs}
+""".strip(),
+            ".bazelrc",
+            string=True,
+        )
         filter_file(
             'f"--output_path={output_path}",',
             'f"--output_path={output_path}",'