diff --git a/pkgs/development/python-modules/netbox-plugin-prometheus-sd/default.nix b/pkgs/development/python-modules/netbox-plugin-prometheus-sd/default.nix
index b125e7af9daa..88df9778b8e2 100644
--- a/pkgs/development/python-modules/netbox-plugin-prometheus-sd/default.nix
+++ b/pkgs/development/python-modules/netbox-plugin-prometheus-sd/default.nix
@@ -1,11 +1,16 @@
 {
   lib,
   buildPythonPackage,
-  django,
   fetchFromGitHub,
+
+  # build-system
+  poetry-core,
+
+  # dependencies
+  django,
   netaddr,
   netbox,
-  poetry-core,
+  psycopg,
 }:
 
 buildPythonPackage (finalAttrs: {
@@ -30,6 +35,7 @@ buildPythonPackage (finalAttrs: {
   dependencies = [
     django
     netaddr
+    psycopg # not specified in pyproject.toml, but required at import time
   ];
 
   nativeCheckInputs = [ netbox ];