diff --git a/var/spack/repos/builtin/packages/r-fastdigest/package.py b/var/spack/repos/builtin/packages/r-fastdigest/package.py
new file mode 100644
index 0000000000..35ad430ffb
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+++ b/var/spack/repos/builtin/packages/r-fastdigest/package.py
@@ -0,0 +1,26 @@
+# 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 RFastdigest(RPackage):
+    """Fast, Low Memory-Footprint Digests of R Objects
+
+    Provides an R interface to Bob Jenkin's streaming, non-cryptographic
+    'SpookyHash' hash algorithm for use in digest-based comparisons of R
+    objects. 'fastdigest' plugs directly into R's internal serialization
+    machinery, allowing digests of all R objects the serialize() function
+    supports, including reference-style objects via custom hooks. Speed is
+    high and scales linearly by object size;
+    memory usage is constant and negligible."""
+
+    homepage = "https://cloud.r-project.org/web/packages/fastdigest/index.html"
+    url      = "https://cloud.r-project.org/src/contrib/fastdigest_0.6-3.tar.gz"
+    list_url = "https://cloud.r-project.org/src/contrib/Archive/fastdigest"
+
+    maintainers = ['dorton21']
+
+    version('0.6-3', sha256='62a04aa39f751cf9bb7ff43cadb3c1a8d2270d7f3e8550a2d6ca9e1d8ca09a09')