diff --git a/Cargo.lock b/Cargo.lock
index a4887b7..5f9f613 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1737,7 +1737,7 @@ dependencies = [
 [[package]]
 name = "neptune-cash"
 version = "0.3.0"
-source = "git+https://github.com/Neptune-Crypto/neptune-core.git?branch=asz%2Ftransparent-transactions#cece8dab9db0334b07a2112a9163e3882ab71a55"
+source = "git+https://github.com/Neptune-Crypto/neptune-core.git?branch=master#1096a2935af9c023a3a737638c09195f4801881b"
 dependencies = [
  "aead",
  "aes-gcm",
diff --git a/Cargo.toml b/Cargo.toml
index 373ede9..03d64ec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -48,7 +48,7 @@ arbitrary = "1.4.1"
 proptest-arbitrary-interop = "0.1.0"
 
 [patch.crates-io]
-neptune-cash = { git = "https://github.com/Neptune-Crypto/neptune-core.git", branch = "asz/transparent-transactions" }
+neptune-cash = { git = "https://github.com/Neptune-Crypto/neptune-core.git", branch = "master" }
 
 [features]
 mock = ["dep:blake3", "dep:rand"]
\ No newline at end of file
diff --git a/src/html/page/announcement.rs b/src/html/page/announcement.rs
index d14cf10..a9a5ed7 100644
--- a/src/html/page/announcement.rs
+++ b/src/html/page/announcement.rs
@@ -84,12 +84,19 @@ pub async fn announcement_page(
             .iter()
             .map(|output| output.addition_record())
             .collect::<Vec<_>>();
-        addition_record_indices = state.rpc_client.addition_record_indices_for_block(context::current(), state.token(), block_selector, &addition_records).await
-                .map_err(|e| not_found_html_response(state, Some(e.to_string())))?
-                .map_err(rpc_method_err)?
-                .expect(
-                    "block guaranteed to exist because we got here; getting its announcements should work",
-                );
+        addition_record_indices = state
+            .rpc_client
+            .addition_record_indices_for_block(
+                context::current(),
+                state.token(),
+                block_selector,
+                &addition_records,
+            )
+            .await
+            .map_err(|e| not_found_html_response(state, Some(e.to_string())))?
+            .map_err(rpc_method_err)?
+            .into_iter()
+            .collect::<HashMap<_, _>>();
 
         let mut transparent_utxos_cache = state.transparent_utxos_cache.lock().await;
 
diff --git a/src/neptune_rpc.rs b/src/neptune_rpc.rs
index 46748f5..fb5227c 100644
--- a/src/neptune_rpc.rs
+++ b/src/neptune_rpc.rs
@@ -19,7 +19,6 @@ use neptune_cash::rpc_server::error::RpcError;
 use neptune_cash::rpc_server::RPCClient;
 use neptune_cash::rpc_server::RpcResult;
 use neptune_cash::util_types::mutator_set::addition_record::AdditionRecord;
-use std::collections::HashMap;
 use std::net::Ipv4Addr;
 use std::net::SocketAddr;
 use std::sync::Arc;
@@ -195,7 +194,7 @@ impl AuthenticatedClient {
         block_selector: BlockSelector,
         _addition_records: &[AdditionRecord],
     ) -> ::core::result::Result<
-        RpcResult<Option<HashMap<AdditionRecord, Option<u64>>>>,
+        RpcResult<Vec<(AdditionRecord, Option<u64>)>>,
         ::tarpc::client::RpcError,
     > {
         let rpc_result = self
@@ -204,7 +203,7 @@ impl AuthenticatedClient {
             .await;
 
         // if the RPC call was successful, return that
-        if let Ok(Ok(Some(_))) = rpc_result {
+        if let Ok(Ok(_)) = rpc_result {
             return rpc_result;
         }