diff --git a/var/spack/repos/builtin/packages/py-scikit-learn/package.py b/var/spack/repos/builtin/packages/py-scikit-learn/package.py
index 86022f0a1a..d5b47d785b 100644
--- a/var/spack/repos/builtin/packages/py-scikit-learn/package.py
+++ b/var/spack/repos/builtin/packages/py-scikit-learn/package.py
@@ -33,6 +33,7 @@ class PyScikitLearn(PythonPackage):
     ]
 
     version('master', branch='master')
+    version('0.22.1', sha256='51ee25330fc244107588545c70e2f3570cfc4017cff09eed69d6e1d82a212b7d')
     version('0.22',   sha256='314abf60c073c48a1e95feaae9f3ca47a2139bd77cebb5b877c23a45c9e03012')
     version('0.21.3', sha256='eb9b8ebf59eddd8b96366428238ab27d05a19e89c5516ce294abc35cea75d003')
     version('0.21.2', sha256='0aafc312a55ebf58073151b9308761a5fcfa45b7f7730cea4b1f066f824c72db')