diff --git a/var/spack/repos/builtin/packages/r-pbkrtest/package.py b/var/spack/repos/builtin/packages/r-pbkrtest/package.py
index 780f0b9f5e..02dd9759d3 100644
--- a/var/spack/repos/builtin/packages/r-pbkrtest/package.py
+++ b/var/spack/repos/builtin/packages/r-pbkrtest/package.py
@@ -24,6 +24,7 @@ class RPbkrtest(RPackage):
     url      = "https://cloud.r-project.org/src/contrib/pbkrtest_0.4-6.tar.gz"
     list_url = "https://cloud.r-project.org/src/contrib/Archive/pbkrtest"
 
+    version('0.5.1', sha256='b2a3452003d93890f122423b3f2487dcb6925440f5b8a05578509e98b6aec7c5')
     version('0.5-0.1', sha256='f56525488c6efe4a5cbf849bf9a82747041478605b166c29bad54e464e46f469')
     version('0.4-7', sha256='5cbb03ad2b2468720a5a610a0ebda48ac08119a34fca77810a85f554225c23ea')
     version('0.4-6', sha256='9d28b8916fea3ffec8d5958bb8c531279b1e273f21fdbeb2fcad6d7e300a9c01')