diff --git a/protos/google/cloud/recaptchaenterprise/v1/recaptchaenterprise.proto b/protos/google/cloud/recaptchaenterprise/v1/recaptchaenterprise.proto
index a2dd1ba..1be736a 100644
--- a/protos/google/cloud/recaptchaenterprise/v1/recaptchaenterprise.proto
+++ b/protos/google/cloud/recaptchaenterprise/v1/recaptchaenterprise.proto
@@ -186,10 +186,21 @@ message AnnotateAssessmentRequest {
     // Default unspecified reason.
     REASON_UNSPECIFIED = 0;
 
-    // Indicates a chargeback for fraud was issued for the transaction
-    // associated with the assessment.
+    // Indicates a chargeback was issued for the transaction associated with the
+    // assessment, with no other details. When possible, specify the type by
+    // using CHARGEBACK_FRAUD or CHARGEBACK_DISPUTE instead.
     CHARGEBACK = 1;
 
+    // Indicates a chargeback related to an alleged unauthorized transaction
+    // from the perspective of the cardholder (for example, the card number was
+    // stolen).
+    CHARGEBACK_FRAUD = 8;
+
+    // Indicates a chargeback related to the cardholder having provided their
+    // card but allegedly not being satisfied with the purchase
+    // (for example, misrepresentation, attempted cancellation).
+    CHARGEBACK_DISPUTE = 9;
+
     // Indicates the transaction associated with the assessment is suspected of
     // being fraudulent based on the payment method, billing details, shipping
     // address or other transaction information.
diff --git a/protos/protos.d.ts b/protos/protos.d.ts
index 5f2fd7b..3e626a8 100644
--- a/protos/protos.d.ts
+++ b/protos/protos.d.ts
@@ -521,6 +521,8 @@ export namespace google {
                     enum Reason {
                         REASON_UNSPECIFIED = 0,
                         CHARGEBACK = 1,
+                        CHARGEBACK_FRAUD = 8,
+                        CHARGEBACK_DISPUTE = 9,
                         PAYMENT_HEURISTICS = 2,
                         INITIATED_TWO_FACTOR = 7,
                         PASSED_TWO_FACTOR = 3,
diff --git a/protos/protos.js b/protos/protos.js
index b415fed..d2b2268 100644
--- a/protos/protos.js
+++ b/protos/protos.js
@@ -919,6 +919,8 @@
                                         return "reasons: enum value[] expected";
                                     case 0:
                                     case 1:
+                                    case 8:
+                                    case 9:
                                     case 2:
                                     case 7:
                                     case 3:
@@ -985,6 +987,14 @@
                                     case 1:
                                         message.reasons[i] = 1;
                                         break;
+                                    case "CHARGEBACK_FRAUD":
+                                    case 8:
+                                        message.reasons[i] = 8;
+                                        break;
+                                    case "CHARGEBACK_DISPUTE":
+                                    case 9:
+                                        message.reasons[i] = 9;
+                                        break;
                                     case "PAYMENT_HEURISTICS":
                                     case 2:
                                         message.reasons[i] = 2;
@@ -1096,6 +1106,8 @@
                          * @enum {number}
                          * @property {number} REASON_UNSPECIFIED=0 REASON_UNSPECIFIED value
                          * @property {number} CHARGEBACK=1 CHARGEBACK value
+                         * @property {number} CHARGEBACK_FRAUD=8 CHARGEBACK_FRAUD value
+                         * @property {number} CHARGEBACK_DISPUTE=9 CHARGEBACK_DISPUTE value
                          * @property {number} PAYMENT_HEURISTICS=2 PAYMENT_HEURISTICS value
                          * @property {number} INITIATED_TWO_FACTOR=7 INITIATED_TWO_FACTOR value
                          * @property {number} PASSED_TWO_FACTOR=3 PASSED_TWO_FACTOR value
@@ -1107,6 +1119,8 @@
                             var valuesById = {}, values = Object.create(valuesById);
                             values[valuesById[0] = "REASON_UNSPECIFIED"] = 0;
                             values[valuesById[1] = "CHARGEBACK"] = 1;
+                            values[valuesById[8] = "CHARGEBACK_FRAUD"] = 8;
+                            values[valuesById[9] = "CHARGEBACK_DISPUTE"] = 9;
                             values[valuesById[2] = "PAYMENT_HEURISTICS"] = 2;
                             values[valuesById[7] = "INITIATED_TWO_FACTOR"] = 7;
                             values[valuesById[3] = "PASSED_TWO_FACTOR"] = 3;
diff --git a/protos/protos.json b/protos/protos.json
index c9911f0..d181a3b 100644
--- a/protos/protos.json
+++ b/protos/protos.json
@@ -296,6 +296,8 @@
                           "values": {
                             "REASON_UNSPECIFIED": 0,
                             "CHARGEBACK": 1,
+                            "CHARGEBACK_FRAUD": 8,
+                            "CHARGEBACK_DISPUTE": 9,
                             "PAYMENT_HEURISTICS": 2,
                             "INITIATED_TWO_FACTOR": 7,
                             "PASSED_TWO_FACTOR": 3,