diff --git a/pkgs/servers/zigbee2mqtt/default.nix b/pkgs/servers/zigbee2mqtt/default.nix
index 3de413f95019..1a3a31e75cd4 100644
--- a/pkgs/servers/zigbee2mqtt/default.nix
+++ b/pkgs/servers/zigbee2mqtt/default.nix
@@ -17,6 +17,10 @@ package.override rec {
 
   passthru.tests.zigbee2mqtt = nixosTests.zigbee2mqtt;
 
+  postInstall = ''
+    npm run build
+  '';
+
   meta = with pkgs.lib; {
     description = "Zigbee to MQTT bridge using zigbee-shepherd";
     license = licenses.gpl3;
diff --git a/pkgs/servers/zigbee2mqtt/update.sh b/pkgs/servers/zigbee2mqtt/update.sh
index f1caee633885..df4ca6266631 100755
--- a/pkgs/servers/zigbee2mqtt/update.sh
+++ b/pkgs/servers/zigbee2mqtt/update.sh
@@ -18,6 +18,7 @@ curl -LO $ZIGBEE2MQTT/npm-shrinkwrap.json
 node2nix \
   --composition node.nix \
   --lock npm-shrinkwrap.json \
+  --development \
   --no-copy-node-env \
   --node-env ../../development/node-packages/node-env.nix \
   --nodejs-14 \