diff --git a/env/merlin/HiQsimulator/packages/py-hiqsimulator/package.py b/env/merlin/HiQsimulator/packages/py-hiqsimulator/package.py
index 5d609ea..7655bd8 100644
--- a/env/merlin/HiQsimulator/packages/py-hiqsimulator/package.py
+++ b/env/merlin/HiQsimulator/packages/py-hiqsimulator/package.py
@@ -46,6 +46,9 @@ class PyHiqsimulator(PythonPackage):
 
     patch('cmake-glog.patch')
 
+    def setup_build_environment(self, env):
+        env.set('BOOST_ROOT', self.spec['boost'].prefix)
+
     def install_options(self, spec, prefix):
         # FIXME: Add options to pass to setup.py install
         # FIXME: If not needed, delete this function