diff --git a/var/spack/repos/builtin/packages/py-mpmath/package.py b/var/spack/repos/builtin/packages/py-mpmath/package.py
index a011891c87a..1076c63d638 100644
--- a/var/spack/repos/builtin/packages/py-mpmath/package.py
+++ b/var/spack/repos/builtin/packages/py-mpmath/package.py
@@ -28,6 +28,7 @@
 class PyMpmath(PythonPackage):
     """A Python library for arbitrary-precision floating-point arithmetic."""
     homepage = "http://mpmath.org"
-    url      = "https://pypi.io/packages/source/m/mpmath/mpmath-all-0.19.tar.gz"
+    url      = "https://pypi.io/packages/source/m/mpmath/mpmath-1.0.0.tar.gz"
 
-    version('0.19', 'd1b7e19dd6830d0d7b5e1bc93d46c02c')
+    version('1.0.0', '998f10cb231af62743212ca80693f1b5')
+    version('0.19', 'af5cc956b2673b33a25c3e57299bae7b')