diff --git a/setup.py b/setup.py
index e560b44..bee6a64 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name = "sioworkers",
-    version = '1.5.1',
+    version = '1.5.2',
     author = "SIO2 Project Team",
     author_email = 'sio2@sio2project.mimuw.edu.pl',
     description = "Programming contest judging infrastructure",
diff --git a/sio/executors/interactive_common.py b/sio/executors/interactive_common.py
index 338a658..907da2a 100644
--- a/sio/executors/interactive_common.py
+++ b/sio/executors/interactive_common.py
@@ -150,7 +150,7 @@ def run(self):
                 environ_prefix='interactor_',
                 mem_limit=DEFAULT_INTERACTOR_MEM_LIMIT,
                 time_limit=interactor_time_limit,
-                pass_fds=(r2, w1),
+                fds_to_close=(r2, w1),
                 close_passed_fd=True,
                 cwd=tempcwd(),
                 in_file=environ['in_file'],
@@ -166,7 +166,7 @@ def run(self):
                 ignore_errors=True,
                 environ=environ,
                 environ_prefix='exec_',
-                pass_fds=(r1, w2),
+                fds_to_close=(r1, w2),
                 close_passed_fd=True,
                 cwd=tempcwd(),
                 in_file=environ['in_file'],