diff --git a/github/orgs_rules_test.go b/github/orgs_rules_test.go
index 50ba4e20c01..eb40929acb3 100644
--- a/github/orgs_rules_test.go
+++ b/github/orgs_rules_test.go
@@ -115,10 +115,7 @@ func TestOrganizationsService_CreateOrganizationRuleset_RepoNames(t *testing.T)
 				"type": "creation"
 			  },
 			  {
-				"type": "update",
-				"parameters": {
-				  "update_allows_fetch_and_merge": true
-				}
+				"type": "update"
 			  },
 			  {
 				"type": "deletion"
@@ -234,9 +231,7 @@ func TestOrganizationsService_CreateOrganizationRuleset_RepoNames(t *testing.T)
 		},
 		Rules: []*RepositoryRule{
 			NewCreationRule(),
-			NewUpdateRule(&UpdateAllowsFetchAndMergeRuleParameters{
-				UpdateAllowsFetchAndMerge: true,
-			}),
+			NewUpdateRule(),
 			NewDeletionRule(),
 			NewRequiredLinearHistoryRule(),
 			NewRequiredDeploymentsRule(&RequiredDeploymentEnvironmentsRuleParameters{
@@ -320,9 +315,7 @@ func TestOrganizationsService_CreateOrganizationRuleset_RepoNames(t *testing.T)
 		},
 		Rules: []*RepositoryRule{
 			NewCreationRule(),
-			NewUpdateRule(&UpdateAllowsFetchAndMergeRuleParameters{
-				UpdateAllowsFetchAndMerge: true,
-			}),
+			NewUpdateRule(),
 			NewDeletionRule(),
 			NewRequiredLinearHistoryRule(),
 			NewRequiredDeploymentsRule(&RequiredDeploymentEnvironmentsRuleParameters{
@@ -429,10 +422,7 @@ func TestOrganizationsService_CreateOrganizationRuleset_RepoIDs(t *testing.T) {
 				"type": "creation"
 			  },
 			  {
-				"type": "update",
-				"parameters": {
-				  "update_allows_fetch_and_merge": true
-				}
+				"type": "update"
 			  },
 			  {
 				"type": "deletion"
@@ -546,9 +536,7 @@ func TestOrganizationsService_CreateOrganizationRuleset_RepoIDs(t *testing.T) {
 		},
 		Rules: []*RepositoryRule{
 			NewCreationRule(),
-			NewUpdateRule(&UpdateAllowsFetchAndMergeRuleParameters{
-				UpdateAllowsFetchAndMerge: true,
-			}),
+			NewUpdateRule(),
 			NewDeletionRule(),
 			NewRequiredLinearHistoryRule(),
 			NewRequiredDeploymentsRule(&RequiredDeploymentEnvironmentsRuleParameters{
@@ -630,9 +618,7 @@ func TestOrganizationsService_CreateOrganizationRuleset_RepoIDs(t *testing.T) {
 		},
 		Rules: []*RepositoryRule{
 			NewCreationRule(),
-			NewUpdateRule(&UpdateAllowsFetchAndMergeRuleParameters{
-				UpdateAllowsFetchAndMerge: true,
-			}),
+			NewUpdateRule(),
 			NewDeletionRule(),
 			NewRequiredLinearHistoryRule(),
 			NewRequiredDeploymentsRule(&RequiredDeploymentEnvironmentsRuleParameters{
diff --git a/github/repos_rules.go b/github/repos_rules.go
index 4e6f5f13474..4e5c4f9d4f9 100644
--- a/github/repos_rules.go
+++ b/github/repos_rules.go
@@ -66,11 +66,6 @@ type RulePatternParameters struct {
 	Pattern  string `json:"pattern"`
 }
 
-// UpdateAllowsFetchAndMergeRuleParameters represents the update rule parameters.
-type UpdateAllowsFetchAndMergeRuleParameters struct {
-	UpdateAllowsFetchAndMerge bool `json:"update_allows_fetch_and_merge"`
-}
-
 // RequiredDeploymentEnvironmentsRuleParameters represents the required_deployments rule parameters.
 type RequiredDeploymentEnvironmentsRuleParameters struct {
 	RequiredDeploymentEnvironments []string `json:"required_deployment_environments"`
@@ -115,18 +110,8 @@ func (r *RepositoryRule) UnmarshalJSON(data []byte) error {
 	r.Type = RepositoryRule.Type
 
 	switch RepositoryRule.Type {
-	case "creation", "deletion", "required_linear_history", "required_signatures", "non_fast_forward":
+	case "creation", "update", "deletion", "required_linear_history", "required_signatures", "non_fast_forward":
 		r.Parameters = nil
-	case "update":
-		params := UpdateAllowsFetchAndMergeRuleParameters{}
-		if err := json.Unmarshal(*RepositoryRule.Parameters, &params); err != nil {
-			return err
-		}
-
-		bytes, _ := json.Marshal(params)
-		rawParams := json.RawMessage(bytes)
-
-		r.Parameters = &rawParams
 	case "required_deployments":
 		params := RequiredDeploymentEnvironmentsRuleParameters{}
 		if err := json.Unmarshal(*RepositoryRule.Parameters, &params); err != nil {
@@ -184,14 +169,9 @@ func NewCreationRule() (rule *RepositoryRule) {
 }
 
 // NewUpdateRule creates a rule to only allow users with bypass permission to update matching refs.
-func NewUpdateRule(params *UpdateAllowsFetchAndMergeRuleParameters) (rule *RepositoryRule) {
-	bytes, _ := json.Marshal(params)
-
-	rawParams := json.RawMessage(bytes)
-
+func NewUpdateRule() (rule *RepositoryRule) {
 	return &RepositoryRule{
-		Type:       "update",
-		Parameters: &rawParams,
+		Type: "update",
 	}
 }
 
diff --git a/github/repos_rules_test.go b/github/repos_rules_test.go
index 582ec89245b..8edebe461df 100644
--- a/github/repos_rules_test.go
+++ b/github/repos_rules_test.go
@@ -60,17 +60,12 @@ func TestRepositoryRule_UnmarshalJSON(t *testing.T) {
 				Parameters: nil,
 			},
 		},
-		"Valid update params": {
-			data: `{"type":"update","parameters":{"update_allows_fetch_and_merge":true}}`,
-			want: NewUpdateRule(&UpdateAllowsFetchAndMergeRuleParameters{UpdateAllowsFetchAndMerge: true}),
-		},
-		"Invalid update params": {
-			data: `{"type":"update","parameters":{"update_allows_fetch_and_merge":"true"}}`,
+		"Valid update": {
+			data: `{"type":"update"}`,
 			want: &RepositoryRule{
 				Type:       "update",
 				Parameters: nil,
 			},
-			wantErr: true,
 		},
 		"Valid required_deployments params": {
 			data: `{"type":"required_deployments","parameters":{"required_deployment_environments":["test"]}}`,
@@ -254,10 +249,7 @@ func TestRepositoriesService_GetRulesForBranch(t *testing.T) {
 			  "type": "creation"
 			},
 			{
-			  "type": "update",
-			  "parameters": {
-			    "update_allows_fetch_and_merge": true
-			  }
+			  "type": "update"
 			}
 		]`)
 	})
@@ -269,9 +261,7 @@ func TestRepositoriesService_GetRulesForBranch(t *testing.T) {
 	}
 
 	creationRule := NewCreationRule()
-	updateRule := NewUpdateRule(&UpdateAllowsFetchAndMergeRuleParameters{
-		UpdateAllowsFetchAndMerge: true,
-	})
+	updateRule := NewUpdateRule()
 
 	want := []*RepositoryRule{
 		creationRule,