diff --git a/Cargo.lock b/Cargo.lock
index 9617d850..384958e3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -717,7 +717,7 @@ checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
 
 [[package]]
 name = "sentry_protos"
-version = "0.22.2"
+version = "0.23.0"
 dependencies = [
  "prost",
  "prost-types",
diff --git a/proto/sentry_protos/billing/v1/services/billing_details/v1/billing_details.proto b/proto/sentry_protos/billing/v1/services/billing_details/v1/billing_details.proto
index 864bef55..210072ca 100644
--- a/proto/sentry_protos/billing/v1/services/billing_details/v1/billing_details.proto
+++ b/proto/sentry_protos/billing/v1/services/billing_details/v1/billing_details.proto
@@ -22,4 +22,7 @@ message BillingDetails {
   optional string company_name = 3;
   optional string billing_email = 4;
   sentry_protos.billing.v1.common.v1.Address billing_address = 5;
+  // The customer's tax registration number (e.g. VAT ID) on file, used when
+  // determining tax treatment for the customer. Unset if none is on file.
+  optional string tax_number = 6;
 }
diff --git a/rust/src/sentry_protos.billing.v1.services.billing_details.v1.rs b/rust/src/sentry_protos.billing.v1.services.billing_details.v1.rs
index 3a05b50b..ee429fa3 100644
--- a/rust/src/sentry_protos.billing.v1.services.billing_details.v1.rs
+++ b/rust/src/sentry_protos.billing.v1.services.billing_details.v1.rs
@@ -31,6 +31,10 @@ pub struct BillingDetails {
     pub billing_address: ::core::option::Option<
         super::super::super::common::v1::Address,
     >,
+    /// The customer's tax registration number (e.g. VAT ID) on file, used when
+    /// determining tax treatment for the customer. Unset if none is on file.
+    #[prost(string, optional, tag = "6")]
+    pub tax_number: ::core::option::Option<::prost::alloc::string::String>,
 }
 #[derive(Clone, Copy, PartialEq, Eq, Hash, ::prost::Message)]
 pub struct GetBillingDetailsRequest {