diff --git a/azurerm/internal/services/redis/redis_cache_data_source.go b/azurerm/internal/services/redis/redis_cache_data_source.go
index 8c75404029bc..ffe765e97389 100644
--- a/azurerm/internal/services/redis/redis_cache_data_source.go
+++ b/azurerm/internal/services/redis/redis_cache_data_source.go
@@ -163,6 +163,12 @@ func dataSourceRedisCache() *pluginsdk.Resource {
 							Type:     pluginsdk.TypeString,
 							Computed: true,
 						},
+
+						"maintenance_window": {
+							Type:     pluginsdk.TypeString,
+							Computed: true,
+						},
+
 						"start_hour_utc": {
 							Type:     pluginsdk.TypeInt,
 							Computed: true,
diff --git a/website/docs/d/redis_cache.html.markdown b/website/docs/d/redis_cache.html.markdown
index 62310e9c0f0d..e87fad582d6a 100644
--- a/website/docs/d/redis_cache.html.markdown
+++ b/website/docs/d/redis_cache.html.markdown
@@ -76,6 +76,8 @@ A `patch_schedule` block supports the following:
 
 * `day_of_week` - the Weekday name for the patch item
 
+* `maintenance_window` - The ISO 8601 timespan which specifies the amount of time the Redis Cache can be updated.
+
 * `start_hour_utc` - The Start Hour for maintenance in UTC
 
 ~> **Note:** The Patch Window lasts for `5` hours from the `start_hour_utc`.