diff --git a/borgmatic/hooks/cronhub.py b/borgmatic/hooks/cronhub.py
index 79450b56a..ee3cee191 100644
--- a/borgmatic/hooks/cronhub.py
+++ b/borgmatic/hooks/cronhub.py
@@ -41,7 +41,9 @@ def ping_monitor(ping_url, config_filename, state, monitoring_log_level, dry_run
         requests.get(ping_url)
 
 
-def destroy_monitor(ping_url_or_uuid, config_filename, monitoring_log_level, dry_run):  # pragma: no cover
+def destroy_monitor(
+    ping_url_or_uuid, config_filename, monitoring_log_level, dry_run
+):  # pragma: no cover
     '''
     No destruction is necessary for this monitor.
     '''
diff --git a/borgmatic/hooks/cronitor.py b/borgmatic/hooks/cronitor.py
index f15256eaf..e8275f05e 100644
--- a/borgmatic/hooks/cronitor.py
+++ b/borgmatic/hooks/cronitor.py
@@ -40,7 +40,9 @@ def ping_monitor(ping_url, config_filename, state, monitoring_log_level, dry_run
         requests.get(ping_url)
 
 
-def destroy_monitor(ping_url_or_uuid, config_filename, monitoring_log_level, dry_run):  # pragma: no cover
+def destroy_monitor(
+    ping_url_or_uuid, config_filename, monitoring_log_level, dry_run
+):  # pragma: no cover
     '''
     No destruction is necessary for this monitor.
     '''
diff --git a/borgmatic/hooks/pagerduty.py b/borgmatic/hooks/pagerduty.py
index ffecc0cc9..ccddfdfd6 100644
--- a/borgmatic/hooks/pagerduty.py
+++ b/borgmatic/hooks/pagerduty.py
@@ -71,7 +71,9 @@ def ping_monitor(integration_key, config_filename, state, monitoring_log_level,
     requests.post(EVENTS_API_URL, data=payload.encode('utf-8'))
 
 
-def destroy_monitor(ping_url_or_uuid, config_filename, monitoring_log_level, dry_run):  # pragma: no cover
+def destroy_monitor(
+    ping_url_or_uuid, config_filename, monitoring_log_level, dry_run
+):  # pragma: no cover
     '''
     No destruction is necessary for this monitor.
     '''