diff --git a/schemas/2020-12-01/Microsoft.Cache.json b/schemas/2020-12-01/Microsoft.Cache.json
index 7c579d1e5f..76b28a8860 100644
--- a/schemas/2020-12-01/Microsoft.Cache.json
+++ b/schemas/2020-12-01/Microsoft.Cache.json
@@ -587,6 +587,7 @@
       "properties": {
         "linkedRedisCacheId": {
           "type": "string",
+          "format": "arm-id",
           "description": "Fully qualified resourceId of the linked redis cache."
         },
         "linkedRedisCacheLocation": {
diff --git a/schemas/2021-06-01/Microsoft.Cache.json b/schemas/2021-06-01/Microsoft.Cache.json
index 44a55794be..2cb4b6b12b 100644
--- a/schemas/2021-06-01/Microsoft.Cache.json
+++ b/schemas/2021-06-01/Microsoft.Cache.json
@@ -639,6 +639,7 @@
       "properties": {
         "linkedRedisCacheId": {
           "type": "string",
+          "format": "arm-id",
           "description": "Fully qualified resourceId of the linked redis cache."
         },
         "linkedRedisCacheLocation": {