diff --git a/var/spack/repos/builtin/packages/ior/package.py b/var/spack/repos/builtin/packages/ior/package.py
index 5a1d3f67dc50523e87ff6286d5ee1390025d3806..d4acdfa481a8a13ba7ca8dbf2493755f01e8c4a0 100644
--- a/var/spack/repos/builtin/packages/ior/package.py
+++ b/var/spack/repos/builtin/packages/ior/package.py
@@ -13,7 +13,9 @@ class Ior(AutotoolsPackage):
     homepage = "https://github.com/hpc/ior"
     url      = "https://github.com/hpc/ior/archive/3.2.1.tar.gz"
 
-    version('3.2.1', sha256='ebcf2495aecb357370a91a2d5852cfd83bba72765e586bcfaf15fb79ca46d00e')
+    version('develop', git='https://github.com/hpc/ior.git', branch='master')
+    version('3.3.0rc1', sha256='0e42ebf5b5adae60625bf97989c8e2519d41ea2e3d18561d7d5b945625317aa5')
+    version('3.2.1', sha256='ebcf2495aecb357370a91a2d5852cfd83bba72765e586bcfaf15fb79ca46d00e', preferred=True)
     version('3.2.0', sha256='91a766fb9c34b5780705d0997b71b236a1120da46652763ba11d9a8c44251852')
     version('3.0.1', sha256='0cbefbcdb02fb13ba364e102f9e7cc2dcf761698533dac25de446a3a3e81390d')