diff --git a/var/spack/repos/builtin/packages/msgpack-c/package.py b/var/spack/repos/builtin/packages/msgpack-c/package.py
index 153c551369..d7bc4708d1 100644
--- a/var/spack/repos/builtin/packages/msgpack-c/package.py
+++ b/var/spack/repos/builtin/packages/msgpack-c/package.py
@@ -11,6 +11,7 @@ class MsgpackC(CMakePackage):
     homepage = "http://www.msgpack.org"
     url      = "https://github.com/msgpack/msgpack-c/archive/cpp-3.0.1.tar.gz"
 
+    version('3.1.1', sha256='bda49f996a73d2c6080ff0523e7b535917cd28c8a79c3a5da54fc29332d61d1e')
     version('3.0.1', sha256='1b834ab0b5b41da1dbfb96dd4a673f6de7e79dbd7f212f45a553ff9cc54abf3b')
     version('1.4.1', sha256='74324d696f9abb75d8a7cd5e77add5062592b7eac386c8102de78a6cc5309886')