diff --git a/src/index.rs b/src/index.rs
index 38ce19a9b3..6251d09229 100644
--- a/src/index.rs
+++ b/src/index.rs
@@ -1708,7 +1708,7 @@ impl Index {
       Utc::now()
         .round_subsecs(0)
         .checked_add_signed(chrono::Duration::seconds(
-          10 * 60 * i64::try_from(expected_blocks)?,
+          10 * 60 * i64::from(expected_blocks),
         ))
         .ok_or_else(|| anyhow!("block timestamp out of range"))?,
     ))
diff --git a/src/index/updater.rs b/src/index/updater.rs
index 44d6bc805b..aa8fe3178f 100644
--- a/src/index/updater.rs
+++ b/src/index/updater.rs
@@ -498,7 +498,7 @@ impl<'index> Updater<'_> {
         coinbase_inputs.extend(input_sat_ranges);
       }
 
-      if let Some((tx, txid)) = block.txdata.get(0) {
+      if let Some((tx, txid)) = block.txdata.first() {
         self.index_transaction_sats(
           tx,
           *txid,
diff --git a/src/templates/blocks.rs b/src/templates/blocks.rs
index 52cc492e5a..570b506c72 100644
--- a/src/templates/blocks.rs
+++ b/src/templates/blocks.rs
@@ -14,7 +14,7 @@ impl BlocksHtml {
   ) -> Self {
     Self {
       last: blocks
-        .get(0)
+        .first()
         .map(|(height, _)| height)
         .cloned()
         .unwrap_or(0),
diff --git a/tests/server.rs b/tests/server.rs
index 4aa0a4ee24..ff5579f043 100644
--- a/tests/server.rs
+++ b/tests/server.rs
@@ -250,7 +250,7 @@ fn inscription_metadata() {
   .rpc_server(&rpc_server)
   .run_and_deserialize_output::<Inscribe>()
   .inscriptions
-  .get(0)
+  .first()
   .unwrap()
   .id;