diff --git a/pkgs/applications/science/math/sage/sagelib.nix b/pkgs/applications/science/math/sage/sagelib.nix
index 0a2bd8011b0b..1552de773d01 100644
--- a/pkgs/applications/science/math/sage/sagelib.nix
+++ b/pkgs/applications/science/math/sage/sagelib.nix
@@ -6,6 +6,7 @@
 , perl
 , pkg-config
 , sage-setup
+, pythonRelaxDepsHook
 , gd
 , iml
 , libpng
@@ -102,6 +103,11 @@ buildPythonPackage rec {
     pip # needed to query installed packages
     pkg-config
     sage-setup
+    pythonRelaxDepsHook
+  ];
+
+  pythonRelaxDeps = [
+    "networkx"
   ];
 
   buildInputs = [