diff --git a/demo/alertmanager.yaml b/demo/alertmanager.yaml
index aa13f105e..150988cc0 100644
--- a/demo/alertmanager.yaml
+++ b/demo/alertmanager.yaml
@@ -1,28 +1,28 @@
 global:
   resolve_timeout: 30s
 route:
-  group_by: ['alertname']
+  group_by: ["alertname"]
   group_wait: 5s
   group_interval: 10s
   repeat_interval: 999h
-  receiver: 'default'
+  receiver: "default"
   routes:
-    - receiver: 'default'
+    - receiver: "default"
       group_by: []
       match_re:
         alertname: .*
       continue: true
-    - receiver: 'by-cluster-service'
-      group_by: ['alertname', 'cluster', 'service']
+    - receiver: "by-cluster-service"
+      group_by: ["alertname", "cluster", "service"]
       match_re:
         alertname: .*
       continue: true
-    - receiver: 'by-name'
+    - receiver: "by-name"
       group_by: [alertname]
       match_re:
         alertname: .*
       continue: true
-    - receiver: 'by-cluster'
+    - receiver: "by-cluster"
       group_by: [cluster]
       match_re:
         alertname: .*
@@ -30,14 +30,14 @@ route:
 
 inhibit_rules:
   - source_match:
-      severity: 'critical'
+      severity: "critical"
     target_match:
-      severity: 'warning'
-    # Apply inhibition if the alertname is the same.
-    equal: ['alertname', 'cluster', 'service']
+      severity: "warning"
+    # Apply inhibition if the alertname and cluster is the same in both
+    equal: ["alertname", "cluster"]
 
 receivers:
-  - name: 'default'
-  - name: 'by-cluster-service'
-  - name: 'by-name'
-  - name: 'by-cluster'
+  - name: "default"
+  - name: "by-cluster-service"
+  - name: "by-name"
+  - name: "by-cluster"
diff --git a/demo/generator.py b/demo/generator.py
index abef696e4..f6e5defa3 100755
--- a/demo/generator.py
+++ b/demo/generator.py
@@ -321,6 +321,32 @@ class LongNameAlerts(AlertGenerator):
         return _gen(5, "dev") + _gen(1, "staging") + _gen(11, "prod")
 
 
+class InhibitedAlert(AlertGenerator):
+    name = "Inhibition Test Alert"
+    comment = "This alert should be inhibited by another alert"
+
+    def alerts(self):
+        return [
+            newAlert(self._labels(instance="server1", cluster="prod",
+                                  severity="warning"),
+                     self._annotations()
+            )
+        ]
+
+
+class InhibitingAlert(AlertGenerator):
+    name = "Inhibition Test Alert"
+    comment = "This alert should inhibit other alerts"
+
+    def alerts(self):
+        return [
+            newAlert(self._labels(instance="server1", cluster="prod",
+                                  severity="critical"),
+                     self._annotations()
+            )
+        ]
+
+
 if __name__ == "__main__":
     generators = [
         AlwaysOnAlert(MAX_INTERVAL),
@@ -332,6 +358,8 @@ if __name__ == "__main__":
         RandomName(MAX_INTERVAL),
         MixedAlerts(MIN_INTERVAL),
         LongNameAlerts(MAX_INTERVAL),
+        InhibitedAlert(MAX_INTERVAL),
+        InhibitingAlert(MAX_INTERVAL),
     ]
     while True:
         for g in generators: