diff --git a/var/spack/repos/builtin/packages/tau/package.py b/var/spack/repos/builtin/packages/tau/package.py
index 05a6102064..da9d247f9a 100644
--- a/var/spack/repos/builtin/packages/tau/package.py
+++ b/var/spack/repos/builtin/packages/tau/package.py
@@ -28,6 +28,7 @@ class Tau(Package):
     tags = ['e4s']
 
     version('master', branch='master')
+    version('2.31.1', sha256='bf445b9d4fe40a5672a7b175044d2133791c4dfb36a214c1a55a931aebc06b9d')
     version('2.31', sha256='27e73c395dd2a42b91591ce4a76b88b1f67663ef13aa19ef4297c68f45d946c2')
     version('2.30.2', sha256='43f84a15b71a226f8a64d966f0cb46022bcfbaefb341295ecc6fa80bb82bbfb4')
     version('2.30.1', sha256='9c20ca1b4f4e80d885f24491cee598068871f0e9dd67906a5e47e4b4147d08fc')