diff --git a/var/spack/repos/builtin/packages/py-pydot/package.py b/var/spack/repos/builtin/packages/py-pydot/package.py
index 75c587047e..46b8776a38 100644
--- a/var/spack/repos/builtin/packages/py-pydot/package.py
+++ b/var/spack/repos/builtin/packages/py-pydot/package.py
@@ -12,10 +12,12 @@ class PyPydot(PythonPackage):
     homepage = "https://github.com/erocarrera/pydot/"
     pypi = "pydot/pydot-1.2.3.tar.gz"
 
+    version('1.4.2', sha256='248081a39bcb56784deb018977e428605c1c758f10897a339fce1dd728ff007d')
     version('1.4.1', sha256='d49c9d4dd1913beec2a997f831543c8cbd53e535b1a739e921642fe416235f01')
     version('1.2.3', sha256='edb5d3f249f97fbd9c4bb16959e61bc32ecf40eee1a9f6d27abe8d01c0a73502')
     version('1.2.2', sha256='04a97a885ed418dcc193135cc525fa356cad8b16719293295a149b30718ce400')
 
+    depends_on('python@2.7:2.8,3.4:', type=('build', 'run'), when='@1.3.0:')
     depends_on('py-setuptools', type='build')
     depends_on('py-pyparsing@2.1.4:', type=('build', 'run'))
     depends_on('graphviz', type=('build', 'run'))