diff --git a/specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/keys.json b/specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/keys.json
index 043237cbfef3..231a80285387 100644
--- a/specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/keys.json
+++ b/specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/keys.json
@@ -1421,6 +1421,7 @@
         },
         "release_policy": {
           "$ref": "#/definitions/KeyReleasePolicy",
+          "x-nullable": true,
           "description": "The policy rules under which the key can be exported."
         }
       },
@@ -1631,6 +1632,7 @@
         },
         "release_policy": {
           "$ref": "#/definitions/KeyReleasePolicy",
+          "x-nullable": true,
           "description": "The policy rules under which the key can be exported."
         }
       },
@@ -1663,6 +1665,7 @@
         },
         "release_policy": {
           "$ref": "#/definitions/KeyReleasePolicy",
+          "x-nullable": true,
           "description": "The policy rules under which the key can be exported."
         }
       },
@@ -1947,6 +1950,7 @@
         },
         "release_policy": {
           "$ref": "#/definitions/KeyReleasePolicy",
+          "x-nullable": true,
           "description": "The policy rules under which the key can be exported."
         }
       },