diff --git a/cara/tests/apps/calculator/test_report_generator.py b/cara/tests/apps/calculator/test_report_generator.py
index 75733d5f..44131d3a 100644
--- a/cara/tests/apps/calculator/test_report_generator.py
+++ b/cara/tests/apps/calculator/test_report_generator.py
@@ -11,7 +11,7 @@ def test_generate_report(baseline_form):
     # generate a report for it. Because this is what happens in the cara
     # calculator, we confirm that the generation happens within a reasonable
     # time threshold.
-    time_limit: float = 20.0  # seconds
+    time_limit: float = 30.0  # seconds
 
     start = time.perf_counter()
 
diff --git a/cara/tests/apps/calculator/test_webapp.py b/cara/tests/apps/calculator/test_webapp.py
index 9ee1a703..fcb8c9b4 100644
--- a/cara/tests/apps/calculator/test_webapp.py
+++ b/cara/tests/apps/calculator/test_webapp.py
@@ -6,6 +6,7 @@ import tornado.testing
 import cara.apps.calculator
 from cara.apps.calculator.report_generator import generate_qr_code
 
+_TIMEOUT = 30.
 
 @pytest.fixture
 def app():
@@ -45,7 +46,7 @@ class TestBasicApp(tornado.testing.AsyncHTTPTestCase):
     def get_app(self):
         return cara.apps.calculator.make_app()
 
-    @tornado.testing.gen_test(timeout=20)
+    @tornado.testing.gen_test(timeout=_TIMEOUT)
     def test_report(self):
         response = yield self.http_client.fetch(self.get_url('/calculator/baseline-model/result'))
         self.assertEqual(response.code, 200)
@@ -58,7 +59,7 @@ class TestCernApp(tornado.testing.AsyncHTTPTestCase):
         cern_theme = Path(cara.apps.calculator.__file__).parent / 'themes' / 'cern'
         return cara.apps.calculator.make_app(theme_dir=cern_theme)
 
-    @tornado.testing.gen_test(timeout=20)
+    @tornado.testing.gen_test(timeout=_TIMEOUT)
     def test_report(self):
         response = yield self.http_client.fetch(self.get_url('/calculator/baseline-model/result'))
         self.assertEqual(response.code, 200)