diff --git a/OPENAPI_VERSION b/OPENAPI_VERSION
index bc67520020..dbdf3c1cba 100644
--- a/OPENAPI_VERSION
+++ b/OPENAPI_VERSION
@@ -1 +1 @@
-v1115
\ No newline at end of file
+v1116
\ No newline at end of file
diff --git a/types/Tax/Transactions.d.ts b/types/Tax/Transactions.d.ts
index d7760fd3a5..ea68ee1215 100644
--- a/types/Tax/Transactions.d.ts
+++ b/types/Tax/Transactions.d.ts
@@ -51,6 +51,11 @@ declare module 'stripe' {
          */
         metadata: Stripe.Metadata | null;
 
+        /**
+         * The Unix timestamp representing when the tax liability is assumed or reduced.
+         */
+        posted_at: number;
+
         /**
          * A custom unique identifier, such as 'myOrder_123'.
          */
diff --git a/types/Tax/TransactionsResource.d.ts b/types/Tax/TransactionsResource.d.ts
index a18aa269e1..38d1fe770d 100644
--- a/types/Tax/TransactionsResource.d.ts
+++ b/types/Tax/TransactionsResource.d.ts
@@ -30,6 +30,11 @@ declare module 'stripe' {
          * Set of [key-value pairs](https://stripe.com/docs/api/metadata) that you can attach to an object. This can be useful for storing additional information about the object in a structured format. Individual keys can be unset by posting an empty value to them. All keys can be unset by posting an empty value to `metadata`.
          */
         metadata?: Stripe.MetadataParam;
+
+        /**
+         * The Unix timestamp representing when the tax liability is assumed or reduced, which determines the liability posting period and handling in tax liability reports. The timestamp must fall within the `tax_date` and the current time, unless the `tax_date` is scheduled in advance. Defaults to the current time.
+         */
+        posted_at?: number;
       }
 
       interface TransactionCreateReversalParams {