diff --git a/var/spack/repos/builtin/packages/exabayes/package.py b/var/spack/repos/builtin/packages/exabayes/package.py
index 3c39766eef..8440b7c450 100644
--- a/var/spack/repos/builtin/packages/exabayes/package.py
+++ b/var/spack/repos/builtin/packages/exabayes/package.py
@@ -3,8 +3,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-from spack import *
-
 
 class Exabayes(AutotoolsPackage):
     """ExaBayes is a software package for Bayesian tree inference. It is
@@ -13,6 +11,7 @@ class Exabayes(AutotoolsPackage):
     homepage = "https://sco.h-its.org/exelixis/web/software/exabayes/"
     url      = "https://sco.h-its.org/exelixis/resource/download/software/exabayes-1.5.tar.gz"
 
+    version('1.5.1', sha256='f75ce8d5cee4d241cadacd0f5f5612d783b9e9babff2a99c7e0c3819a94bbca9')
     version('1.5', sha256='e401f1b4645e67e8879d296807131d0ab79bba81a1cd5afea14d7c3838b095a2')
 
     variant('mpi', default=True, description='Enable MPI parallel support')
@@ -22,7 +21,7 @@ class Exabayes(AutotoolsPackage):
     # ExaBayes manual states the program succesfully compiles with GCC, version
     # 4.6 or greater, and Clang, version 3.2 or greater. The build fails when
     # GCC 7.1.0 is used.
-    conflicts('%gcc@:4.5.4, 7.1.0:')
+    conflicts('%gcc@:4.5.4, 7.1.0:', when='@:1.5.0')
     conflicts('%clang@:3.1')
     conflicts('^intel-mpi', when='+mpi')
     conflicts('^intel-parallel-studio+mpi', when='+mpi')