diff --git a/doc/source/invocation.rst b/doc/source/invocation.rst
index 1d744e54..bee788a3 100644
--- a/doc/source/invocation.rst
+++ b/doc/source/invocation.rst
@@ -35,6 +35,12 @@ You can also set hosts per test module::
         [....]
 
 
+If you need to filter or update generated host list (f.e. after ["ansible://somegroup"]),
+you can use testinfra_hosts_update function:
+
+    def testinfra_hosts_update(host_list):
+        return [host_list[0]]
+
 
 Parallel execution
 ~~~~~~~~~~~~~~~~~~
diff --git a/testinfra/plugin.py b/testinfra/plugin.py
index bbad24a1..170b26ee 100644
--- a/testinfra/plugin.py
+++ b/testinfra/plugin.py
@@ -117,6 +117,10 @@ def pytest_generate_tests(metafunc):
             ansible_inventory=metafunc.config.option.ansible_inventory,
             force_ansible=metafunc.config.option.force_ansible,
         )
+        if hasattr(metafunc.module, "testinfra_hosts_update"):
+            if not callable(metafunc.module.testinfra_update.callable):
+                pytest.fail("testinfra_hosts_update must be a function")
+            params = metafunc.module.testinfra_hosts_update(params)
         params = sorted(params, key=lambda x: x.backend.get_pytest_id())
         ids = [e.backend.get_pytest_id() for e in params]
         metafunc.parametrize(