diff --git a/pkgs/development/python-modules/tsplib95/default.nix b/pkgs/development/python-modules/tsplib95/default.nix
index a2e862444e6f..8c85f48cc664 100644
--- a/pkgs/development/python-modules/tsplib95/default.nix
+++ b/pkgs/development/python-modules/tsplib95/default.nix
@@ -42,6 +42,7 @@ buildPythonPackage rec {
   '';
 
   pythonRelaxDeps = [
+    "deprecated"
     "networkx"
     "tabulate"
   ];