diff --git a/docs/configuration/single-process-config-blocks-gossip-1.yaml b/docs/configuration/single-process-config-blocks-gossip-1.yaml
index 5d53411921b..7c7b3b515ac 100644
--- a/docs/configuration/single-process-config-blocks-gossip-1.yaml
+++ b/docs/configuration/single-process-config-blocks-gossip-1.yaml
@@ -96,3 +96,12 @@ ruler_storage:
   backend: local
   local:
     directory: /tmp/cortex/rules
+
+alertmanager:
+  external_url: http://localhost/alertmanager
+
+alertmanager_storage:
+  backend: local
+  local:
+    # Make sure file exist
+    path: /tmp/cortex/alerts
diff --git a/docs/configuration/single-process-config-blocks-gossip-2.yaml b/docs/configuration/single-process-config-blocks-gossip-2.yaml
index 419e70e9df7..54dbf79548b 100644
--- a/docs/configuration/single-process-config-blocks-gossip-2.yaml
+++ b/docs/configuration/single-process-config-blocks-gossip-2.yaml
@@ -95,3 +95,12 @@ ruler_storage:
   backend: local
   local:
     directory: /tmp/cortex/rules
+
+alertmanager:
+  external_url: http://localhost/alertmanager
+
+alertmanager_storage:
+  backend: local
+  local:
+    # Make sure file exist
+    path: /tmp/cortex/alerts
diff --git a/docs/configuration/single-process-config-blocks-local.yaml b/docs/configuration/single-process-config-blocks-local.yaml
index a5eb711d979..c6b97ae0edf 100644
--- a/docs/configuration/single-process-config-blocks-local.yaml
+++ b/docs/configuration/single-process-config-blocks-local.yaml
@@ -88,3 +88,12 @@ ruler_storage:
   backend: local
   local:
     directory: /tmp/cortex/rules
+
+alertmanager:
+  external_url: http://localhost/alertmanager
+
+alertmanager_storage:
+  backend: local
+  local:
+    # Make sure file exist
+    path: /tmp/cortex/alerts
diff --git a/docs/configuration/single-process-config-blocks-tls.yaml b/docs/configuration/single-process-config-blocks-tls.yaml
index ca468192c9a..352bf7c8a00 100644
--- a/docs/configuration/single-process-config-blocks-tls.yaml
+++ b/docs/configuration/single-process-config-blocks-tls.yaml
@@ -102,3 +102,12 @@ ruler_storage:
   backend: local
   local:
     directory: /tmp/cortex/rules
+
+alertmanager:
+  external_url: http://localhost/alertmanager
+
+alertmanager_storage:
+  backend: local
+  local:
+    # Make sure file exist
+    path: /tmp/cortex/alerts
diff --git a/docs/configuration/single-process-config-blocks.yaml b/docs/configuration/single-process-config-blocks.yaml
index 25d699a24fa..c03d69a5e79 100644
--- a/docs/configuration/single-process-config-blocks.yaml
+++ b/docs/configuration/single-process-config-blocks.yaml
@@ -88,3 +88,12 @@ ruler_storage:
   backend: local
   local:
     directory: /tmp/cortex/rules
+
+alertmanager:
+  external_url: http://localhost/alertmanager
+
+alertmanager_storage:
+  backend: local
+  local:
+    # Make sure file exist
+    path: /tmp/cortex/alerts