diff --git a/var/spack/repos/builtin/packages/universal/package.py b/var/spack/repos/builtin/packages/universal/package.py
new file mode 100644
index 0000000000..09a1555fda
--- /dev/null
+++ b/var/spack/repos/builtin/packages/universal/package.py
@@ -0,0 +1,17 @@
+# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class Universal(CMakePackage):
+    """Universal: a header-only C++ template library for universal number arithmetic"""
+
+    homepage = "https://github.com/stillwater-sc/universal"
+    url = "https://github.com/stillwater-sc/universal/archive/refs/tags/v3.68.tar.gz"
+
+    maintainers("eschnett")
+
+    version("3.68", sha256="67de4e0a3276b873a298ab98f1237ff3fd23240178e71405bf813ee38e4b1f62")