diff --git a/CHANGELOG.md b/CHANGELOG.md
index f1a9cf5..7aefd62 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## master / unreleased
+* [CHANGE] Use cortex v1.15.3
+* [CHANGE] Azure storage endpoint suffix is set to `blob.core.windows.net` for backward compatibility
+
 ## 1.14.1 / 2023-07-11
 
 * [CHANGE] Use faster disks for compactor
diff --git a/cortex/config.libsonnet b/cortex/config.libsonnet
index 0ac5b8e..5eb93eb 100644
--- a/cortex/config.libsonnet
+++ b/cortex/config.libsonnet
@@ -98,6 +98,7 @@
       'blocks-storage.azure.container-name': $._config.blocks_storage_bucket_name,
       'blocks-storage.azure.account-name': $._config.blocks_storage_azure_account_name,
       'blocks-storage.azure.account-key': $._config.blocks_storage_azure_account_key,
+      'blocks-storage.azure.endpoint-suffix': 'blob.core.windows.net',
     },
 
     blocksStorageConfig:
@@ -164,6 +165,7 @@
           '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,
+          'ruler-storage.azure.endpoint-suffix': 'blob.core.windows.net',
         },
         'local': {
           'ruler-storage.local.directory': $._config.ruler_local_directory,
@@ -194,6 +196,7 @@
           '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,
+          'alertmanager-storage.azure.endpoint-suffix': 'blob.core.windows.net',
         },
         gcs: {
           'alertmanager-storage.gcs.bucket-name': $._config.alertmanager_gcs_bucket_name,
diff --git a/cortex/images.libsonnet b/cortex/images.libsonnet
index 9018679..05f89c0 100644
--- a/cortex/images.libsonnet
+++ b/cortex/images.libsonnet
@@ -5,7 +5,7 @@
     memcachedExporter: 'prom/memcached-exporter:v0.6.0',
 
     // Our services.
-    cortex: 'cortexproject/cortex:v1.14.1',
+    cortex: 'cortexproject/cortex:v1.15.3',
 
     alertmanager: self.cortex,
     distributor: self.cortex,
@@ -20,7 +20,7 @@
     query_scheduler: self.cortex,
 
     overrides_exporter: self.cortex,
-    query_tee: 'quay.io/cortexproject/query-tee:v1.14.1',
-    testExporter: 'cortexproject/test-exporter:v1.14.1',
+    query_tee: 'quay.io/cortexproject/query-tee:v1.15.3',
+    testExporter: 'cortexproject/test-exporter:v1.15.3',
   },
 }