diff --git a/python/setup.py.in b/python/setup.py.in
index eaff2434..aca08b6b 100644
--- a/python/setup.py.in
+++ b/python/setup.py.in
@@ -15,7 +15,7 @@ class f2py_Build(build_ext):
             self.build_extension(ext)
 
     def build_extension(self, ext):
-        os.system(f"@F2PY_EXECUTABLE@ -c {ext.name}.pyf -m {ext.name}")
+        os.system(f"@F2PY_EXECUTABLE@ -c {ext.name}.pyf -m {ext.name} -L@CMAKE_BINARY_DIR@/src -lbufr_4")
 
 add_attribute = lambda **args: [list.append(attdict[key], value)
                                     for key, value in args.items()]