diff --git a/var/spack/repos/builtin/packages/mercury/package.py b/var/spack/repos/builtin/packages/mercury/package.py
index 1c531277d7..a2cdad6f1b 100644
--- a/var/spack/repos/builtin/packages/mercury/package.py
+++ b/var/spack/repos/builtin/packages/mercury/package.py
@@ -17,6 +17,7 @@ class Mercury(CMakePackage):
     tags = ["e4s"]
 
     version("master", branch="master", submodules=True)
+    version("2.3.1", sha256="36182d49f2db7e2b075240cab4aaa1d4ec87a7756450c87643ededd1e6f16104")
     version("2.3.0", sha256="e9e62ce1bb2fd482f0e85ad75fa255d9750c6fed50ba441a03de93b3b8eae742")
     version("2.2.0", sha256="e66490cf63907c3959bbb2932b5aaf51d96a481b17f0935f409f3a862eff97f6")
     version("2.1.0", sha256="9a58437161e9273b1b1c484d2f1a477a89eea9afe84575415025d47656f3761b")