diff --git a/pkgs/applications/networking/irc/weechat/default.nix b/pkgs/applications/networking/irc/weechat/default.nix
index 199b238ab388..1d79561fc235 100644
--- a/pkgs/applications/networking/irc/weechat/default.nix
+++ b/pkgs/applications/networking/irc/weechat/default.nix
@@ -38,6 +38,7 @@
   pcre2,
   libargon2,
   extraBuildInputs ? [ ],
+  writeScript,
 }:
 
 let
@@ -98,16 +99,16 @@ let
   enabledPlugins = builtins.filter (p: p.enabled) plugins;
 
 in
-assert lib.all (p: p.enabled -> !(builtins.elem null p.buildInputs)) plugins;
-stdenv.mkDerivation rec {
-  version = "4.5.1";
-  pname = "weechat";
 
-  hardeningEnable = [ "pie" ];
+assert lib.all (p: p.enabled -> !(builtins.elem null p.buildInputs)) plugins;
+
+stdenv.mkDerivation rec {
+  pname = "weechat";
+  version = "4.6.2";
 
   src = fetchurl {
     url = "https://weechat.org/files/src/weechat-${version}.tar.xz";
-    hash = "sha256-Z8FDx7xw5om56obfZ0yan/PPRMzJzf8hvmpWHV6vxSg=";
+    hash = "sha256-D6AkKhgRb+J/dG27giEhgF2mu129QHUNQsYzBuSJZig=";
   };
 
   # Why is this needed? https://github.com/weechat/weechat/issues/2031
@@ -120,19 +121,22 @@ stdenv.mkDerivation rec {
 
   cmakeFlags =
     [
-      "-DENABLE_MAN=ON"
-      "-DENABLE_DOC=ON"
-      "-DENABLE_DOC_INCOMPLETE=ON"
-      "-DENABLE_TESTS=${if enableTests then "ON" else "OFF"}"
+      (lib.cmakeBool "ENABLE_MAN" true)
+      (lib.cmakeBool "ENABLE_DOC" true)
+      (lib.cmakeBool "ENABLE_DOC_INCOMPLETE" true)
+      (lib.cmakeBool "ENABLE_TESTS" enableTests)
     ]
-    ++ lib.optionals stdenv.hostPlatform.isDarwin [ "-DICONV_LIBRARY=${libiconv}/lib/libiconv.dylib" ]
-    ++ map (p: "-D${p.cmakeFlag}=" + (if p.enabled then "ON" else "OFF")) plugins;
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
+      (lib.cmakeFeature "ICONV_LIBRARY" "${libiconv}/lib/libiconv.dylib")
+    ]
+    ++ map (p: lib.cmakeBool p.cmakeFlag p.enabled) plugins;
 
   nativeBuildInputs = [
     cmake
     pkg-config
     asciidoctor
   ] ++ lib.optional enableTests cpputest;
+
   buildInputs =
     [
       ncurses
@@ -152,6 +156,8 @@ stdenv.mkDerivation rec {
     ++ lib.concatMap (p: p.buildInputs) enabledPlugins
     ++ extraBuildInputs;
 
+  hardeningEnable = [ "pie" ];
+
   env.NIX_CFLAGS_COMPILE =
     "-I${python}/include/${python.libPrefix}"
     # Fix '_res_9_init: undefined symbol' error
@@ -167,13 +173,28 @@ stdenv.mkDerivation rec {
   '';
 
   doInstallCheck = true;
+
   installCheckPhase = ''
     $out/bin/weechat --version
   '';
 
+  passthru.updateScript = writeScript "update-weechat" ''
+    #!/usr/bin/env nix-shell
+    #!nix-shell -i bash -p coreutils gawk git gnugrep common-updater-scripts
+    set -eu -o pipefail
+
+    version="$(git ls-remote --refs https://github.com/weechat/weechat | \
+      awk '{ print $2 }' | \
+      grep "refs/tags/v" | \
+      sed -E -e 's,refs/tags/v(.*)$,\1,' | \
+      sort --version-sort --reverse | \
+      head -n1)"
+    update-source-version weechat-unwrapped "$version"
+  '';
+
   meta = {
     homepage = "https://weechat.org/";
-    changelog = "https://weechat.org/files/doc/weechat/ChangeLog-${version}.html";
+    changelog = "https://github.com/weechat/weechat/releases/tag/v${version}";
     description = "Fast, light and extensible chat client";
     longDescription = ''
       You can find more documentation as to how to customize this package