diff --git a/CHANGELOG.md b/CHANGELOG.md
index 40b51d48..c14acd42 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -51,6 +51,7 @@
   * `CortexAlertmanagerReplicationFailing`
   * `CortexAlertmanagerPersistStateFailing`
   * `CortexAlertmanagerInitialSyncFailed`
+* [ENHANCEMENT] Add support for Azure storage in Alertmanager configuration. #381
 * [BUGFIX] Fixed `CortexIngesterHasNotShippedBlocks` alert false positive in case an ingester instance had ingested samples in the past, then no traffic was received for a long period and then it started receiving samples again. #308
 * [BUGFIX] Alertmanager: fixed `--alertmanager.cluster.peers` CLI flag passed to alertmanager when HA is enabled. #329
 * [BUGFIX] Fixed `CortexInconsistentRuntimeConfig` metric. #335
diff --git a/cortex/config.libsonnet b/cortex/config.libsonnet
index 57fb7a2d..488e11fe 100644
--- a/cortex/config.libsonnet
+++ b/cortex/config.libsonnet
@@ -282,13 +282,19 @@
 
     alertmanager_client_type: error 'you must specify a storage backend type for the alertmanager (azure, gcs, s3, local)',
     alertmanager_s3_bucket_name: error 'you must specify the alertmanager S3 bucket name',
-    alertmanager_gcs_bucket_name: error 'must specify a GCS bucket name',
+    alertmanager_gcs_bucket_name: error 'you must specify a GCS bucket name',
+    alertmanager_azure_container_name: error 'you must specify an Azure container name',
 
     alertmanagerStorageClientConfig:
       {
         'alertmanager-storage.backend': $._config.alertmanager_client_type,
       } +
       {
+        azure: {
+          'alertmanager-storage.azure.account-key': $._config.alertmanager_azure_account_key,
+          'alertmanager-storage.azure.account-name': $._config.alertmanager_azure_account_name,
+          'alertmanager-storage.azure.container-name': $._config.alertmanager_azure_container_name,
+        },
         gcs: {
           'alertmanager-storage.gcs.bucket-name': $._config.alertmanager_gcs_bucket_name,
         },