diff --git a/var/spack/repos/builtin/packages/py-traceback2/package.py b/var/spack/repos/builtin/packages/py-traceback2/package.py
index 23bcc8f60c5..a2d20645248 100644
--- a/var/spack/repos/builtin/packages/py-traceback2/package.py
+++ b/var/spack/repos/builtin/packages/py-traceback2/package.py
@@ -16,3 +16,5 @@ class PyTraceback2(PythonPackage):
 
     depends_on('py-setuptools', type='build')
     depends_on('py-pbr', type='build')
+    depends_on('py-six',        type=('build', 'run'))
+    depends_on('py-linecache2', type=('build', 'run'))