diff --git a/Cargo.lock b/Cargo.lock
index ba5c3c8e..ad90a3fa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -717,7 +717,7 @@ checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
 
 [[package]]
 name = "sentry_protos"
-version = "0.8.29"
+version = "0.8.30"
 dependencies = [
  "prost",
  "prost-types",
diff --git a/proto/sentry_protos/snuba/v1/trace_item_attribute.proto b/proto/sentry_protos/snuba/v1/trace_item_attribute.proto
index 17398316..e47e526f 100644
--- a/proto/sentry_protos/snuba/v1/trace_item_attribute.proto
+++ b/proto/sentry_protos/snuba/v1/trace_item_attribute.proto
@@ -20,6 +20,9 @@ message AttributeKey {
   // `sentry.` to allow users to send attributes of the same name.
   // Exampe: `sentry.duration`, `sentry.span_id` etc
   string name = 2;
+
+  // Optional indexed access into an array-typed attribute (only meaningful when type == TYPE_ARRAY).
+  optional uint32 index = 3;
 }
 
 // this allow us to select single key such as span.attr1
diff --git a/rust/src/sentry_protos.snuba.v1.rs b/rust/src/sentry_protos.snuba.v1.rs
index 1f93c29f..13842d2b 100644
--- a/rust/src/sentry_protos.snuba.v1.rs
+++ b/rust/src/sentry_protos.snuba.v1.rs
@@ -8,6 +8,9 @@ pub struct AttributeKey {
     /// Exampe: `sentry.duration`, `sentry.span_id` etc
     #[prost(string, tag = "2")]
     pub name: ::prost::alloc::string::String,
+    /// Optional indexed access into an array-typed attribute (only meaningful when type == TYPE_ARRAY).
+    #[prost(uint32, optional, tag = "3")]
+    pub index: ::core::option::Option<u32>,
 }
 /// Nested message and enum types in `AttributeKey`.
 pub mod attribute_key {