diff --git a/pkgs/development/python-modules/notebook/default.nix b/pkgs/development/python-modules/notebook/default.nix
index 8a9a82b2569..2f674c9ac34 100644
--- a/pkgs/development/python-modules/notebook/default.nix
+++ b/pkgs/development/python-modules/notebook/default.nix
@@ -20,6 +20,7 @@
 , requests
 , send2trash
 , pexpect
+, prometheus_client
 }:
 
 buildPythonPackage rec {
@@ -39,6 +40,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     jinja2 tornado ipython_genutils traitlets jupyter_core send2trash
     jupyter_client nbformat nbconvert ipykernel terminado requests pexpect
+    prometheus_client
   ];
 
   # disable warning_filters