diff --git a/pkg/cmd/repo/edit/edit.go b/pkg/cmd/repo/edit/edit.go
index 81ebee963..b5e4db996 100644
--- a/pkg/cmd/repo/edit/edit.go
+++ b/pkg/cmd/repo/edit/edit.go
@@ -58,6 +58,7 @@ type EditOptions struct {
 
 type EditRepositoryInput struct {
 	AllowForking        *bool   `json:"allow_forking,omitempty"`
+	AllowUpdateBranch   *bool   `json:"allow_update_branch,omitempty"`
 	DefaultBranch       *string `json:"default_branch,omitempty"`
 	DeleteBranchOnMerge *bool   `json:"delete_branch_on_merge,omitempty"`
 	Description         *string `json:"description,omitempty"`
@@ -151,6 +152,7 @@ func NewCmdEdit(f *cmdutil.Factory, runF func(options *EditOptions) error) *cobr
 	cmdutil.NilBoolFlag(cmd, &opts.Edits.EnableAutoMerge, "enable-auto-merge", "", "Enable auto-merge functionality")
 	cmdutil.NilBoolFlag(cmd, &opts.Edits.DeleteBranchOnMerge, "delete-branch-on-merge", "", "Delete head branch when pull requests are merged")
 	cmdutil.NilBoolFlag(cmd, &opts.Edits.AllowForking, "allow-forking", "", "Allow forking of an organization repository")
+	cmdutil.NilBoolFlag(cmd, &opts.Edits.AllowUpdateBranch, "allow-update-branch", "", "Allow a pull request head branch that is behind its base branch to be updated")
 	cmd.Flags().StringSliceVar(&opts.AddTopics, "add-topic", nil, "Add repository topic")
 	cmd.Flags().StringSliceVar(&opts.RemoveTopics, "remove-topic", nil, "Remove repository topic")
 
diff --git a/pkg/cmd/repo/edit/edit_test.go b/pkg/cmd/repo/edit/edit_test.go
index 41193b057..7302b5169 100644
--- a/pkg/cmd/repo/edit/edit_test.go
+++ b/pkg/cmd/repo/edit/edit_test.go
@@ -128,6 +128,23 @@ func Test_editRun(t *testing.T) {
 					}))
 			},
 		},
+		{
+			name: "allow update branch",
+			opts: EditOptions{
+				Repository: ghrepo.NewWithHost("OWNER", "REPO", "github.com"),
+				Edits: EditRepositoryInput{
+					AllowUpdateBranch: bp(true),
+				},
+			},
+			httpStubs: func(t *testing.T, r *httpmock.Registry) {
+				r.Register(
+					httpmock.REST("PATCH", "repos/OWNER/REPO"),
+					httpmock.RESTPayload(200, `{}`, func(payload map[string]interface{}) {
+						assert.Equal(t, 1, len(payload))
+						assert.Equal(t, true, payload["allow_update_branch"])
+					}))
+			},
+		},
 	}
 
 	for _, tt := range tests {
@@ -339,3 +356,7 @@ func Test_editRun_interactive(t *testing.T) {
 func sp(v string) *string {
 	return &v
 }
+
+func bp(b bool) *bool {
+	return &b
+}