diff --git a/var/spack/repos/builtin/packages/py-pyasn1/package.py b/var/spack/repos/builtin/packages/py-pyasn1/package.py
index 3d4d9ab3a3f025af8c45c637ee0996faac05ab60..ea95f32844089e85535c60876ad55c18866f3061 100644
--- a/var/spack/repos/builtin/packages/py-pyasn1/package.py
+++ b/var/spack/repos/builtin/packages/py-pyasn1/package.py
@@ -15,6 +15,7 @@ class PyPyasn1(PythonPackage):
     url      = "https://pypi.io/packages/source/p/pyasn1/pyasn1-0.4.6.tar.gz"
 
     version('0.4.6', sha256='b773d5c9196ffbc3a1e13bdf909d446cad80a039aa3340bcad72f395b76ebc86')
+    version('0.4.5', sha256='da2420fe13a9452d8ae97a0e478adde1dee153b11ba832a95b223a2ba01c10f7')
     version('0.2.3', sha256='738c4ebd88a718e700ee35c8d129acce2286542daa80a82823a7073644f706ad')
 
     depends_on('python@2.4:', type=('build', 'run'))