diff --git a/var/spack/repos/builtin/packages/namd/package.py b/var/spack/repos/builtin/packages/namd/package.py
index d335a2c6317..1a25c462e81 100644
--- a/var/spack/repos/builtin/packages/namd/package.py
+++ b/var/spack/repos/builtin/packages/namd/package.py
@@ -16,6 +16,7 @@ class Namd(MakefilePackage):
     homepage = "http://www.ks.uiuc.edu/Research/namd/"
     url      = "file://{0}/NAMD_2.12_Source.tar.gz".format(os.getcwd())
 
+    version('2.13', '9e3323ed856e36e34d5c17a7b0341e38')
     version('2.12', '2a1191909b1ab03bf0205971ad4d8ee9')
 
     variant('fftw', default='3', values=('none', '2', '3', 'mkl'),