diff --git a/component/common.libsonnet b/component/common.libsonnet
index 0c29b54..8cd61e4 100644
--- a/component/common.libsonnet
+++ b/component/common.libsonnet
@@ -77,6 +77,18 @@ local removeNamespace = {
   },
 };
 
+local resetAlertManagerConfig = {
+  alertmanager+:: {
+    config+:: {
+      receivers: [],
+      inhibit_rules: [],
+      route+: {
+        routes: [],
+      },
+    },
+  },
+};
+
 local stackForInstance = function(instanceName)
   local confWithBase = com.makeMergeable(params.base) + com.makeMergeable(params.instances[instanceName]);
   local cm = std.foldl(function(prev, k) prev {
@@ -95,7 +107,7 @@ local stackForInstance = function(instanceName)
         // We need to explicitly handle enabling thanos, as upstream has a "null" in the field, making standard merge impossible
         [if std.objectHas(confWithBase.prometheus.config, 'thanos') then 'thanos']: confWithBase.prometheus.config.thanos,
       },
-    } + com.makeMergeable(cm),
+    } + resetAlertManagerConfig + com.makeMergeable(cm),
   } + com.makeMergeable(overrides) + removeNamespace;
 
 local render_component(configuredStack, component, prefix, instance) =
diff --git a/tests/golden/kubernetes_1.20/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml b/tests/golden/kubernetes_1.20/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
index 3337941..6c1e9c4 100644
--- a/tests/golden/kubernetes_1.20/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
+++ b/tests/golden/kubernetes_1.20/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
@@ -14,14 +14,7 @@ metadata:
   namespace: syn-prometheus
 stringData:
   alertmanager.yaml: "\"global\":\n  \"resolve_timeout\": \"5m\"\n\"inhibit_rules\"\
-    :\n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_match\":\n \
-    \   \"severity\": \"critical\"\n  \"target_match_re\":\n    \"severity\": \"warning|info\"\
-    \n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_match\":\n  \
-    \  \"severity\": \"warning\"\n  \"target_match_re\":\n    \"severity\": \"info\"\
-    \n\"receivers\":\n- \"name\": \"Default\"\n- \"name\": \"Watchdog\"\n- \"name\"\
-    : \"Critical\"\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"group_interval\"\
-    : \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\n  \"repeat_interval\"\
-    : \"12h\"\n  \"routes\":\n  - \"match\":\n      \"alertname\": \"Watchdog\"\n\
-    \    \"receiver\": \"Watchdog\"\n  - \"match\":\n      \"severity\": \"critical\"\
-    \n    \"receiver\": \"Critical\""
+    : []\n\"receivers\": []\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"\
+    group_interval\": \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\
+    \n  \"repeat_interval\": \"12h\"\n  \"routes\": []"
 type: Opaque
diff --git a/tests/golden/kubernetes_1.21/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml b/tests/golden/kubernetes_1.21/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
index 4d6ceac..a245460 100644
--- a/tests/golden/kubernetes_1.21/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
+++ b/tests/golden/kubernetes_1.21/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
@@ -14,14 +14,7 @@ metadata:
   namespace: syn-prometheus
 stringData:
   alertmanager.yaml: "\"global\":\n  \"resolve_timeout\": \"5m\"\n\"inhibit_rules\"\
-    :\n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_match\":\n \
-    \   \"severity\": \"critical\"\n  \"target_match_re\":\n    \"severity\": \"warning|info\"\
-    \n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_match\":\n  \
-    \  \"severity\": \"warning\"\n  \"target_match_re\":\n    \"severity\": \"info\"\
-    \n\"receivers\":\n- \"name\": \"Default\"\n- \"name\": \"Watchdog\"\n- \"name\"\
-    : \"Critical\"\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"group_interval\"\
-    : \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\n  \"repeat_interval\"\
-    : \"12h\"\n  \"routes\":\n  - \"match\":\n      \"alertname\": \"Watchdog\"\n\
-    \    \"receiver\": \"Watchdog\"\n  - \"match\":\n      \"severity\": \"critical\"\
-    \n    \"receiver\": \"Critical\""
+    : []\n\"receivers\": []\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"\
+    group_interval\": \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\
+    \n  \"repeat_interval\": \"12h\"\n  \"routes\": []"
 type: Opaque
diff --git a/tests/golden/kubernetes_1.22/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml b/tests/golden/kubernetes_1.22/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
index 7454e58..b03a3f6 100644
--- a/tests/golden/kubernetes_1.22/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
+++ b/tests/golden/kubernetes_1.22/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
@@ -14,14 +14,7 @@ metadata:
   namespace: syn-prometheus
 stringData:
   alertmanager.yaml: "\"global\":\n  \"resolve_timeout\": \"5m\"\n\"inhibit_rules\"\
-    :\n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_matchers\":\n\
-    \  - \"severity = critical\"\n  \"target_matchers\":\n  - \"severity =~ warning|info\"\
-    \n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_matchers\":\n\
-    \  - \"severity = warning\"\n  \"target_matchers\":\n  - \"severity = info\"\n\
-    \"receivers\":\n- \"name\": \"Default\"\n- \"name\": \"Watchdog\"\n- \"name\"\
-    : \"Critical\"\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"group_interval\"\
-    : \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\n  \"repeat_interval\"\
-    : \"12h\"\n  \"routes\":\n  - \"matchers\":\n    - \"alertname = Watchdog\"\n\
-    \    \"receiver\": \"Watchdog\"\n  - \"matchers\":\n    - \"severity = critical\"\
-    \n    \"receiver\": \"Critical\""
+    : []\n\"receivers\": []\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"\
+    group_interval\": \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\
+    \n  \"repeat_interval\": \"12h\"\n  \"routes\": []"
 type: Opaque
diff --git a/tests/golden/kubernetes_1.23/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml b/tests/golden/kubernetes_1.23/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
index 4128211..a961b19 100644
--- a/tests/golden/kubernetes_1.23/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
+++ b/tests/golden/kubernetes_1.23/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
@@ -14,17 +14,7 @@ metadata:
   namespace: syn-prometheus
 stringData:
   alertmanager.yaml: "\"global\":\n  \"resolve_timeout\": \"5m\"\n\"inhibit_rules\"\
-    :\n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_matchers\":\n\
-    \  - \"severity = critical\"\n  \"target_matchers\":\n  - \"severity =~ warning|info\"\
-    \n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_matchers\":\n\
-    \  - \"severity = warning\"\n  \"target_matchers\":\n  - \"severity = info\"\n\
-    - \"equal\":\n  - \"namespace\"\n  \"source_matchers\":\n  - \"alertname = InfoInhibitor\"\
-    \n  \"target_matchers\":\n  - \"severity = info\"\n\"receivers\":\n- \"name\"\
-    : \"Default\"\n- \"name\": \"Watchdog\"\n- \"name\": \"Critical\"\n- \"name\"\
-    : \"null\"\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"group_interval\"\
-    : \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\n  \"repeat_interval\"\
-    : \"12h\"\n  \"routes\":\n  - \"matchers\":\n    - \"alertname = Watchdog\"\n\
-    \    \"receiver\": \"Watchdog\"\n  - \"matchers\":\n    - \"alertname = InfoInhibitor\"\
-    \n    \"receiver\": \"null\"\n  - \"matchers\":\n    - \"severity = critical\"\
-    \n    \"receiver\": \"Critical\""
+    : []\n\"receivers\": []\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"\
+    group_interval\": \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\
+    \n  \"repeat_interval\": \"12h\"\n  \"routes\": []"
 type: Opaque
diff --git a/tests/golden/kubernetes_1.24/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml b/tests/golden/kubernetes_1.24/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
index 4128211..a961b19 100644
--- a/tests/golden/kubernetes_1.24/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
+++ b/tests/golden/kubernetes_1.24/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
@@ -14,17 +14,7 @@ metadata:
   namespace: syn-prometheus
 stringData:
   alertmanager.yaml: "\"global\":\n  \"resolve_timeout\": \"5m\"\n\"inhibit_rules\"\
-    :\n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_matchers\":\n\
-    \  - \"severity = critical\"\n  \"target_matchers\":\n  - \"severity =~ warning|info\"\
-    \n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_matchers\":\n\
-    \  - \"severity = warning\"\n  \"target_matchers\":\n  - \"severity = info\"\n\
-    - \"equal\":\n  - \"namespace\"\n  \"source_matchers\":\n  - \"alertname = InfoInhibitor\"\
-    \n  \"target_matchers\":\n  - \"severity = info\"\n\"receivers\":\n- \"name\"\
-    : \"Default\"\n- \"name\": \"Watchdog\"\n- \"name\": \"Critical\"\n- \"name\"\
-    : \"null\"\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"group_interval\"\
-    : \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\n  \"repeat_interval\"\
-    : \"12h\"\n  \"routes\":\n  - \"matchers\":\n    - \"alertname = Watchdog\"\n\
-    \    \"receiver\": \"Watchdog\"\n  - \"matchers\":\n    - \"alertname = InfoInhibitor\"\
-    \n    \"receiver\": \"null\"\n  - \"matchers\":\n    - \"severity = critical\"\
-    \n    \"receiver\": \"Critical\""
+    : []\n\"receivers\": []\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"\
+    group_interval\": \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\
+    \n  \"repeat_interval\": \"12h\"\n  \"routes\": []"
 type: Opaque
diff --git a/tests/golden/openshift/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml b/tests/golden/openshift/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
index 7454e58..b03a3f6 100644
--- a/tests/golden/openshift/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
+++ b/tests/golden/openshift/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
@@ -14,14 +14,7 @@ metadata:
   namespace: syn-prometheus
 stringData:
   alertmanager.yaml: "\"global\":\n  \"resolve_timeout\": \"5m\"\n\"inhibit_rules\"\
-    :\n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_matchers\":\n\
-    \  - \"severity = critical\"\n  \"target_matchers\":\n  - \"severity =~ warning|info\"\
-    \n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_matchers\":\n\
-    \  - \"severity = warning\"\n  \"target_matchers\":\n  - \"severity = info\"\n\
-    \"receivers\":\n- \"name\": \"Default\"\n- \"name\": \"Watchdog\"\n- \"name\"\
-    : \"Critical\"\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"group_interval\"\
-    : \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\n  \"repeat_interval\"\
-    : \"12h\"\n  \"routes\":\n  - \"matchers\":\n    - \"alertname = Watchdog\"\n\
-    \    \"receiver\": \"Watchdog\"\n  - \"matchers\":\n    - \"severity = critical\"\
-    \n    \"receiver\": \"Critical\""
+    : []\n\"receivers\": []\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"\
+    group_interval\": \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\
+    \n  \"repeat_interval\": \"12h\"\n  \"routes\": []"
 type: Opaque
diff --git a/tests/golden/rewrite-registries/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml b/tests/golden/rewrite-registries/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
index 4d6ceac..a245460 100644
--- a/tests/golden/rewrite-registries/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
+++ b/tests/golden/rewrite-registries/prometheus/prometheus/30_default-instance_alertmanager_secret.yaml
@@ -14,14 +14,7 @@ metadata:
   namespace: syn-prometheus
 stringData:
   alertmanager.yaml: "\"global\":\n  \"resolve_timeout\": \"5m\"\n\"inhibit_rules\"\
-    :\n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_match\":\n \
-    \   \"severity\": \"critical\"\n  \"target_match_re\":\n    \"severity\": \"warning|info\"\
-    \n- \"equal\":\n  - \"namespace\"\n  - \"alertname\"\n  \"source_match\":\n  \
-    \  \"severity\": \"warning\"\n  \"target_match_re\":\n    \"severity\": \"info\"\
-    \n\"receivers\":\n- \"name\": \"Default\"\n- \"name\": \"Watchdog\"\n- \"name\"\
-    : \"Critical\"\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"group_interval\"\
-    : \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\n  \"repeat_interval\"\
-    : \"12h\"\n  \"routes\":\n  - \"match\":\n      \"alertname\": \"Watchdog\"\n\
-    \    \"receiver\": \"Watchdog\"\n  - \"match\":\n      \"severity\": \"critical\"\
-    \n    \"receiver\": \"Critical\""
+    : []\n\"receivers\": []\n\"route\":\n  \"group_by\":\n  - \"namespace\"\n  \"\
+    group_interval\": \"5m\"\n  \"group_wait\": \"30s\"\n  \"receiver\": \"Default\"\
+    \n  \"repeat_interval\": \"12h\"\n  \"routes\": []"
 type: Opaque