diff --git a/forwardport/tests/conftest.py b/forwardport/tests/conftest.py
index 408345af..0a656c52 100644
--- a/forwardport/tests/conftest.py
+++ b/forwardport/tests/conftest.py
@@ -7,7 +7,6 @@ import requests
 @pytest.fixture
 def default_crons():
     return [
-        'runbot_merge.process_updated_commits',
         'runbot_merge.merge_cron',
         'runbot_merge.staging_cron',
         'forwardport.port_forward',
diff --git a/forwardport/tests/test_simple.py b/forwardport/tests/test_simple.py
index 65bfca2d..2e5a5af8 100644
--- a/forwardport/tests/test_simple.py
+++ b/forwardport/tests/test_simple.py
@@ -597,7 +597,7 @@ def test_disapproval(env, config, make_repo, users):
         prod.post_status(pr2_id.head, 'success')
         pr2.post_comment('hansen r+', token=config['role_other']['token'])
     # no point creating staging for our needs, just propagate statuses
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert pr1_id.state == 'ready'
     assert pr2_id.state == 'ready'
 
diff --git a/runbot_merge/data/merge_cron.xml b/runbot_merge/data/merge_cron.xml
index ffd3147f..3240e3ae 100644
--- a/runbot_merge/data/merge_cron.xml
+++ b/runbot_merge/data/merge_cron.xml
@@ -70,8 +70,8 @@
     <field name="model_id" ref="model_runbot_merge_commit"/>
     <field name="state">code</field>
     <field name="code">model._notify()</field>
-    <field name="interval_number">30</field>
-    <field name="interval_type">minutes</field>
+    <field name="interval_number">6</field>
+    <field name="interval_type">hours</field>
     <field name="numbercall">-1</field>
     <field name="doall" eval="False"/>
     <field name="priority">20</field>
diff --git a/runbot_merge/tests/conftest.py b/runbot_merge/tests/conftest.py
index b663a688..5f84298c 100644
--- a/runbot_merge/tests/conftest.py
+++ b/runbot_merge/tests/conftest.py
@@ -9,8 +9,6 @@ def default_crons():
     return [
         # env['runbot_merge.project']._check_fetch()
         'runbot_merge.fetch_prs_cron',
-        # env['runbot_merge.commit']._notify()
-        'runbot_merge.process_updated_commits',
         # env['runbot_merge.project']._check_stagings()
         'runbot_merge.merge_cron',
         # env['runbot_merge.project']._create_stagings()
diff --git a/runbot_merge/tests/test_basic.py b/runbot_merge/tests/test_basic.py
index abb03ec4..e738787d 100644
--- a/runbot_merge/tests/test_basic.py
+++ b/runbot_merge/tests/test_basic.py
@@ -607,7 +607,7 @@ def test_timeout_bump_on_pending(env, repo, config):
     st.timeout_limit = old_timeout
     with repo:
         repo.post_status('staging.master', 'pending', 'ci/runbot')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert st.timeout_limit > old_timeout
 
 def test_staging_ci_failure_single(env, repo, users, config, page):
@@ -2463,7 +2463,7 @@ class TestPRUpdate(object):
 
         env.run_crons()
         pr_id = to_pr(env, pr)
-        env.run_crons('runbot_merge.process_updated_commits')
+        env.run_crons(None)
         assert pr_id.message == 'title\n\nbody'
         assert pr_id.state == 'ready'
         old_reviewer = pr_id.reviewed_by
@@ -3008,7 +3008,7 @@ class TestBatching(object):
                 reviewer=None,
             )
             pr02.post_comment('hansen alone r+', config['role_reviewer']['token'])
-        env.run_crons('runbot_merge.process_updated_commits')
+        env.run_crons(None)
         pr01_id = to_pr(env, pr01)
         assert pr01_id.blocked is False
         pr02_id = to_pr(env, pr02)
@@ -3077,7 +3077,7 @@ class TestBatching(object):
         with repo:
             repo.post_status('staging.master', 'success', 'ci/runbot')
             repo.post_status('staging.master', 'success', 'legal/cla')
-        env.run_crons('runbot_merge.process_updated_commits', 'runbot_merge.merge_cron', 'runbot_merge.staging_cron')
+        env.run_crons('runbot_merge.merge_cron', 'runbot_merge.staging_cron')
         assert pr2.state == 'merged'
 
 class TestReviewing:
diff --git a/runbot_merge/tests/test_by_branch.py b/runbot_merge/tests/test_by_branch.py
index efaf0394..9134a4e2 100644
--- a/runbot_merge/tests/test_by_branch.py
+++ b/runbot_merge/tests/test_by_branch.py
@@ -34,15 +34,15 @@ def test_status_applies(env, repo, config):
 
     with repo:
         repo.post_status(c, 'success', 'ci')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert pr_id.state == 'opened'
     with repo:
         repo.post_status(c, 'success', 'pr')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert pr_id.state == 'opened'
     with repo:
         repo.post_status(c, 'success', 'lint')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert pr_id.state == 'validated'
 
     with repo:
@@ -53,15 +53,15 @@ def test_status_applies(env, repo, config):
     assert st.state == 'pending'
     with repo:
         repo.post_status('staging.master', 'success', 'ci')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert st.state == 'pending'
     with repo:
         repo.post_status('staging.master', 'success', 'lint')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert st.state == 'pending'
     with repo:
         repo.post_status('staging.master', 'success', 'staging')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert st.state == 'success'
 
 @pytest.mark.usefixtures('_setup_statuses')
@@ -84,11 +84,11 @@ def test_status_skipped(env, project, repo, config):
 
     with repo:
         repo.post_status(c, 'success', 'ci')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert pr_id.state == 'opened'
     with repo:
         repo.post_status(c, 'success', 'pr')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert pr_id.state == 'validated'
 
     with repo:
@@ -99,11 +99,11 @@ def test_status_skipped(env, project, repo, config):
     assert st.state == 'pending'
     with repo:
         repo.post_status('staging.maintenance', 'success', 'staging')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert st.state == 'pending'
     with repo:
         repo.post_status('staging.maintenance', 'success', 'ci')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert st.state == 'success'
 
 def test_pseudo_version_tag(env, project, make_repo, setreviewers, config):
diff --git a/runbot_merge/tests/test_project_toggles.py b/runbot_merge/tests/test_project_toggles.py
index 30fe4eff..30ce5f78 100644
--- a/runbot_merge/tests/test_project_toggles.py
+++ b/runbot_merge/tests/test_project_toggles.py
@@ -101,7 +101,7 @@ def test_staging_priority(env, project, repo, config, mode, cutoff, second):
         for pr, pr_id in zip(prs[cutoff:], pr_ids[cutoff:]):
             pr.post_comment('hansen r+', config['role_reviewer']['token'])
             repo.post_status(pr_id.head, 'success')
-    env.run_crons('runbot_merge.process_updated_commits')
+    env.run_crons(None)
     assert not pr_ids.filtered(lambda p: p.blocked)
 
     # trigger a split
@@ -114,7 +114,7 @@ def test_staging_priority(env, project, repo, config, mode, cutoff, second):
     env[model].browse([cron_id]).write({
         'nextcall': (datetime.datetime.utcnow() + datetime.timedelta(minutes=10)).isoformat(" ", "seconds")
     })
-    env.run_crons('runbot_merge.process_updated_commits', 'runbot_merge.merge_cron')
+    env.run_crons('runbot_merge.merge_cron')
     assert not staging.active
     assert not env['runbot_merge.stagings'].search([]).active
     assert env['runbot_merge.split'].search_count([]) == 2