diff --git a/protocol-models/src/main/resources/airbyte_protocol/airbyte_protocol.yaml b/protocol-models/src/main/resources/airbyte_protocol/airbyte_protocol.yaml
index b345c7c5..8d88123b 100644
--- a/protocol-models/src/main/resources/airbyte_protocol/airbyte_protocol.yaml
+++ b/protocol-models/src/main/resources/airbyte_protocol/airbyte_protocol.yaml
@@ -810,6 +810,15 @@ definitions:
                 {
                   "redirect_uri_key": "my_custom_redirect_uri_key_name"
                 }
+          token_expiry_key:
+            type: string
+            description: |-
+              The OAuth Specific optional override to provide the custom key name to something like `expires_at`, if required by data-provider.
+
+              Examples:
+                {
+                  "token_expiry_key": "expires_at"
+                }
         existingJavaType: com.fasterxml.jackson.databind.JsonNode
       complete_oauth_output_specification:
         description: |-
diff --git a/protocol-models/src/main/resources/airbyte_protocol/v0/airbyte_protocol.yaml b/protocol-models/src/main/resources/airbyte_protocol/v0/airbyte_protocol.yaml
index c8bb18e8..823555db 100644
--- a/protocol-models/src/main/resources/airbyte_protocol/v0/airbyte_protocol.yaml
+++ b/protocol-models/src/main/resources/airbyte_protocol/v0/airbyte_protocol.yaml
@@ -865,6 +865,15 @@ definitions:
                 {
                   "redirect_uri_key": "my_custom_redirect_uri_key_name"
                 }
+          token_expiry_key:
+            type: string
+            description: |-
+              The OAuth Specific optional override to provide the custom key name to something like `expires_at`, if required by data-provider.
+
+              Examples:
+                {
+                  "token_expiry_key": "expires_at"
+                }
         existingJavaType: com.fasterxml.jackson.databind.JsonNode
       complete_oauth_output_specification:
         description: |-
diff --git a/readme.md b/readme.md
index 80f1eea0..5aefbf7b 100644
--- a/readme.md
+++ b/readme.md
@@ -37,3 +37,5 @@ To release:
 ## Release Errors
 
 If there is a publishing error on merge to master, the [manual publishing workflow](https://github.com/airbytehq/airbyte-protocol/actions/workflows/manual-publish.yml) is an escape hatch for manually republishing artifacts for a specific version.
+
+test change! do not merge!