diff --git a/pkgs/development/libraries/libmsgpack/default.nix b/pkgs/development/libraries/libmsgpack/default.nix
index 5b2c7902c3c6..2af7e31c889a 100644
--- a/pkgs/development/libraries/libmsgpack/default.nix
+++ b/pkgs/development/libraries/libmsgpack/default.nix
@@ -1,12 +1,12 @@
 { callPackage, fetchFromGitHub, ... } @ args:
 
 callPackage ./generic.nix (args // rec {
-  version = "1.1.0";
+  version = "2.0.0";
 
   src = fetchFromGitHub {
     owner = "msgpack";
     repo = "msgpack-c";
     rev = "cpp-${version}";
-    sha256 = "1hnpnin6gjiilbzfd75871kamfn9grrf53qpbs061sflvz56fddq";
+    sha256 = "189m44pwpcpf7g4yhzfla4djqyp2kl54wxmwfaj94gwgj5s370i7";
   };
 })