diff --git a/CHANGELOG.md b/CHANGELOG.md
index a0fed5c..ae6c119 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -78,6 +78,7 @@
 * [ENHANCEMENT] Add ability to override `datasource` for generated dashboards. #407
 * [ENHANCEMENT] Use alertmanager jobname for alertmanager dashboard panels #411
 * [ENHANCEMENT] Added `CortexDistributorReachingInflightPushRequestLimit` alert. #408
+* [ENHANCEMENT] Define Azure object storage ruler args. #416
 * [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 1761bed..5ce9bff 100644
--- a/cortex/config.libsonnet
+++ b/cortex/config.libsonnet
@@ -245,6 +245,8 @@
     ruler_enabled: false,
     ruler_client_type: error 'you must specify a storage backend type for the ruler (azure, gcs, s3, local)',
     ruler_storage_bucket_name: error 'must specify the ruler storage bucket name',
+    ruler_storage_azure_account_name: error 'must specify the ruler storage Azure account name',
+    ruler_storage_azure_account_key: error 'must specify the ruler storage Azure account key',
 
     rulerClientConfig:
       {
@@ -258,7 +260,11 @@
           'ruler-storage.s3.region': $._config.aws_region,
           'ruler-storage.s3.bucket-name': $._config.ruler_storage_bucket_name,
         },
-        azure: {},
+        azure: {
+          'ruler-storage.azure.container-name': $._config.ruler_storage_bucket_name,
+          'ruler-storage.azure.account-name': $._config.ruler_storage_azure_account_name,
+          'ruler-storage.azure.account-key': $._config.ruler_storage_azure_account_key,
+        },
         'local': {
           'ruler-storage.local.directory': $._config.ruler_local_directory,
         },