diff --git a/github/github.graphql b/github/github.graphql
index 824e5c30f..92374c175 100644
--- a/github/github.graphql
+++ b/github/github.graphql
@@ -22359,6 +22359,17 @@ type PullRequest implements Node & Assignable & Closable & Comment & Updatable &
   viewerSubscription: SubscriptionState
 }
 
+"""
+The possible methods for updating a pull request's head branch with the base branch.
+"""
+enum PullRequestBranchUpdateMethod {
+  """Update branch via merge"""
+  MERGE
+
+  """Update branch via rebase"""
+  REBASE
+}
+
 """A file changed in a pull request."""
 type PullRequestChangedFile {
   """The number of additions to the file."""
@@ -32353,7 +32364,8 @@ input StartRepositoryMigrationInput {
 
   """
   Whether to continue the migration on error. Defaults to `false`. We strongly
-  recommend setting this to `true` for the smoothest migration experience.
+  recommend setting this to `true` for the smoothest migration experience. *This
+  default will change to `true` on September 4, 2023.*
   """
   continueOnError: Boolean
 
@@ -36236,6 +36248,9 @@ input UpdatePullRequestBranchInput {
   """The head ref oid for the upstream branch."""
   expectedHeadOid: GitObjectID
 
+  """The update branch method to use. If omitted, defaults to 'MERGE'"""
+  updateMethod: PullRequestBranchUpdateMethod
+
   """A unique identifier for the client performing the mutation."""
   clientMutationId: String
 }