diff --git a/pkgs/tools/networking/proxychains-ng/default.nix b/pkgs/tools/networking/proxychains-ng/default.nix
index 35a6c7d7f87..12b3932b8f9 100644
--- a/pkgs/tools/networking/proxychains-ng/default.nix
+++ b/pkgs/tools/networking/proxychains-ng/default.nix
@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchFromGitHub
+, fetchpatch
 }:
 
 stdenv.mkDerivation rec {
@@ -14,6 +15,28 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-uu/zN6W0ue526/3a9QeYg6J4HLaovZJVOYXksjouYok=";
   };
 
+  patches = [
+    # zsh completion
+    (fetchpatch {
+      url = "https://github.com/rofl0r/proxychains-ng/commit/04023d3811d8ee34b498b429bac7a871045de59c.patch";
+      sha256 = "sha256-Xcg2kmAhj/OJn/RKJAxb9MOJNJQY7FXmxEIzQ5dvabo=";
+    })
+    (fetchpatch {
+      url = "https://github.com/rofl0r/proxychains-ng/commit/9b42da71f4df7b783cf07a58ffa095e293c43380.patch";
+      sha256 = "sha256-tYv9XP51WtsjaoklwQk3D/MQceoOvtdMwBraECt6AXQ=";
+    })
+  ];
+
+  installFlags = [
+    "install-config"
+    # TODO: check on next update if that works and remove postInstall
+    # "install-zsh-completion"
+  ];
+
+  postInstall = ''
+    ./tools/install.sh -D -m 644 completions/_proxychains $out/share/zsh/site_functions/_proxychains4
+  '';
+
   meta = with lib; {
     description = "A preloader which hooks calls to sockets in dynamically linked programs and redirects it through one or more socks/http proxies";
     homepage = "https://github.com/rofl0r/proxychains-ng";
diff --git a/pkgs/tools/networking/proxychains/default.nix b/pkgs/tools/networking/proxychains/default.nix
index b93c6ae12cf..df692f372c8 100644
--- a/pkgs/tools/networking/proxychains/default.nix
+++ b/pkgs/tools/networking/proxychains/default.nix
@@ -19,6 +19,10 @@ stdenv.mkDerivation rec {
     substituteInPlace Makefile --replace "-Werror" "-Werror -Wno-stringop-truncation"
   '';
 
+  installFlags = [
+    "install-config"
+  ];
+
   meta = with lib; {
     description = "Proxifier for SOCKS proxies";
     homepage = "http://proxychains.sourceforge.net";