diff --git a/pkgs/development/libraries/zeromq/4.x.nix b/pkgs/development/libraries/zeromq/4.x.nix
index 53b1f2f7431..9fa429f9a4c 100644
--- a/pkgs/development/libraries/zeromq/4.x.nix
+++ b/pkgs/development/libraries/zeromq/4.x.nix
@@ -41,7 +41,7 @@ stdenv.mkDerivation rec {
     branch = "4";
     homepage = "http://www.zeromq.org";
     description = "The Intelligent Transport Layer";
-    license = licenses.gpl3;
+    license = licenses.lgpl3Plus;
     platforms = platforms.all;
     maintainers = with maintainers; [ fpletz ];
   };