diff --git a/pkgs/development/libraries/libmsgpack/1.4.nix b/pkgs/development/libraries/libmsgpack/1.4.nix
deleted file mode 100644
index 2779162feb8a..000000000000
--- a/pkgs/development/libraries/libmsgpack/1.4.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{ callPackage, fetchFromGitHub, ... } @ args:
-
-callPackage ./generic.nix (args // rec {
-  version = "1.4.2";
-
-  src = fetchFromGitHub {
-    owner = "msgpack";
-    repo = "msgpack-c";
-    rev = "cpp-${version}";
-    sha256 = "0zlanifi5hmm303pzykpidq5jbapl891zwkwhkllfn8ab1jvzbaa";
-  };
-})
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index eb04e27fac0b..5f8fa8b77b0c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9265,7 +9265,6 @@ with pkgs;
 
   libmsgpack = callPackage ../development/libraries/libmsgpack { };
   libmsgpack_2_0 = callPackage ../development/libraries/libmsgpack/2.0.nix { };
-  libmsgpack_1_4 = callPackage ../development/libraries/libmsgpack/1.4.nix { };
 
   libmysqlconnectorcpp = callPackage ../development/libraries/libmysqlconnectorcpp {
     mysql = mysql57;