diff --git a/oioioi/default_settings.py b/oioioi/default_settings.py
index 67a59ac09..ceaa1f4a0 100755
--- a/oioioi/default_settings.py
+++ b/oioioi/default_settings.py
@@ -453,7 +453,9 @@
 # There should be an entry for every language supported with key being the same
 # as in SUBMITTABLE_LANGUAGES.
 SUBMITTABLE_EXTENSIONS = {'C': ['c'], 'C++': ['cpp', 'cc'], 'Pascal': ['pas'],
-                          'Java': ['java'], 'Python': ['py'], 'Output-only': ['txt', 'out']}
+                          'Java': ['java'], 'Python': ['py'],
+                          'Output-only': ['txt', 'out', 'zip', 'tar', 'tar.gz',
+                                          'tar.bz2', 'tgz', 'tz2']}
 
 # This setting specifies which compilers are available in sioworkers.
 # By default that means ones defined here:
diff --git a/oioioi/programs/handlers.py b/oioioi/programs/handlers.py
index acddbfac8..f92eb023e 100755
--- a/oioioi/programs/handlers.py
+++ b/oioioi/programs/handlers.py
@@ -295,6 +295,7 @@ def run_tests(env, kind=None, **kwargs):
         if env.get('interactor_file'):
             job['interactor_file'] = env['interactor_file']
         job['untrusted_checker'] = env['untrusted_checker']
+        job['problem_short_name'] = env['problem_short_name']
         jobs[test_name] = job
     extra_args = env.get('sioworkers_extra_args', {}).get(kind, {})
     env['workers_jobs'] = jobs
diff --git a/requirements.txt b/requirements.txt
index 48667d776..80b42f931 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 # These dependencies need to be installed from external sources,
 # therefore they must be listed here. Moreover, they cannot be listed in
 # setup.py, as pip is not able to install them.
-http://github.com/sio2project/sioworkers/archive/refs/tags/v1.5.2.tar.gz
+http://github.com/sio2project/sioworkers/archive/refs/tags/v1.5.3.tar.gz
 
 -e .