diff --git a/var/spack/repos/builtin/packages/mrbayes/package.py b/var/spack/repos/builtin/packages/mrbayes/package.py
index 930bc04af9..ec02498e94 100644
--- a/var/spack/repos/builtin/packages/mrbayes/package.py
+++ b/var/spack/repos/builtin/packages/mrbayes/package.py
@@ -13,21 +13,18 @@ class Mrbayes(AutotoolsPackage):
        of model parameters."""
 
     homepage = "http://mrbayes.sourceforge.net"
-    git      = "https://github.com/NBISweden/MrBayes.git"
+    url      = "https://github.com/NBISweden/MrBayes/releases/download/v3.2.7a/mrbayes-3.2.7a.tar.gz"
 
-    version('2017-11-22', commit='8a9adb11bcc538cb95d91d57568dff383f924503')
+    version('3.2.7a', sha256='1a4670be84e6b968d59382328294db4c8ceb73e0c19c702265deec6f2177815c')
+    version('3.2.7',  sha256='39d9eb269969b501268d5c27f77687c6eaa2c71ccf15c724e6f330fc405f24b9')
 
     variant('mpi', default=True, description='Enable MPI parallel support')
     variant('beagle', default=True, description='Enable BEAGLE library for speed benefits')
-    variant('sse', default=True, description='Enable SSE in order to substantially speed up execution')
-
-    depends_on('autoconf', type='build')
-    depends_on('automake', type='build')
-    depends_on('libtool',  type='build')
-    depends_on('m4',       type='build')
+    variant('readline', default=False, description='Enable readline library, not recommended with MPI')
 
     depends_on('libbeagle', when='+beagle')
     depends_on('mpi', when='+mpi')
+    depends_on('readline', when='+readline')
 
     def configure_args(self):
         args = []
@@ -35,14 +32,14 @@ def configure_args(self):
             args.append('--with-beagle=no')
         else:
             args.append('--with-beagle=%s' % self.spec['libbeagle'].prefix)
-        if '~sse' in self.spec:
-            args.append('--enable-sse=no')
+        if '+readline' in self.spec:
+            args.append('--with-readline=yes')
         else:
-            args.append('--enable-sse=yes')
+            args.append('--with-readline=no')
         if '~mpi' in self.spec:
-            args.append('--enable-mpi=no')
+            args.append('--with-mpi=no')
         else:
-            args.append('--enable-mpi=yes')
+            args.append('--with-mpi=yes')
         return args
 
     def install(self, spec, prefix):