diff --git a/var/spack/repos/builtin/packages/toml11/package.py b/var/spack/repos/builtin/packages/toml11/package.py
new file mode 100644
index 0000000000..200e833e3c
--- /dev/null
+++ b/var/spack/repos/builtin/packages/toml11/package.py
@@ -0,0 +1,28 @@
+# Copyright 2013-2021 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 import *
+
+
+class Toml11(CMakePackage):
+    """toml11 is a C++11 (or later) header-only toml parser/encoder depending
+    only on C++ standard library."""
+
+    homepage = "https://github.com/ToruNiina/toml11"
+    url      = "https://github.com/ToruNiina/toml11/archive/refs/tags/v3.7.0.tar.gz"
+
+    maintainers = ['ashermancinelli', 'ToruNiina']
+
+    version('3.7.0', sha256='a0b6bec77c0e418eea7d270a4437510884f2fe8f61e7ab121729624f04c4b58e')
+    version('3.6.1', sha256='ca4c390ed8da0d77ae6eca30e70ab0bf5cc92adfc1bc2f71a2066bc5656d8d96')
+    version('3.6.0', sha256='39e8d651db346ae8c7e3b39d6338a37232b9af3bba36ade45b241bf105c2226c')
+    version('3.5.0', sha256='fc613874c6e80dc740134a7353cf23c7f834b59cd601af84ab535ee16a53b1c3')
+    version('3.4.0', sha256='bc6d733efd9216af8c119d8ac64a805578c79cc82b813e4d1d880ca128bd154d')
+    version('3.3.1', sha256='0c1b29e1a2873a1b1f6d0865a2966a2d3fd9155aeccb6139cd5af22f70b0b08f')
+    version('3.3.0', sha256='b29995475922fae3095445219d36733ef18976abdc85685d0804ee3ea04f09c0')
+    version('3.2.1', sha256='370f17409cfcbf3f629728ed7ec2e1573544058615fb5d066f4f7c14693143a9')
+    version('3.2.0', sha256='3d54cac38ea24477190e0535377e824bf06562970ef4d35b59aa9729437e1019')
+    version('3.1.0', sha256='3a118f32e5343998f37be9807c72fd11c3168fe12a5b1abfdc0f1e60de6380a4')