diff --git a/pkgs/development/python-modules/pyomo/default.nix b/pkgs/development/python-modules/pyomo/default.nix
index 958711754bd..14ccdaa64c3 100644
--- a/pkgs/development/python-modules/pyomo/default.nix
+++ b/pkgs/development/python-modules/pyomo/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, isPy27
 , pyutilib
 , appdirs
 , ply
@@ -11,6 +12,7 @@
 buildPythonPackage rec {
   pname = "pyomo";
   version = "5.6.1";
+  disabled = isPy27; # unable to import pyutilib.th
 
   src = fetchPypi {
     pname = "Pyomo";