diff --git a/src/GetActionsHandler.js b/src/GetActionsHandler.js
index d0e550d..db0891a 100644
--- a/src/GetActionsHandler.js
+++ b/src/GetActionsHandler.js
@@ -40,18 +40,20 @@ class GetActionsHandler extends MassiveActionHandler {
     return [false, 0]
   }
 
-  // Override to use ON CONFLICT DO NOTHING for _block_number_txid.
-  // Re-processed blocks (e.g. after switching from NodeosActionReader) would otherwise
-  // crash with a duplicate key violation since that table has no upsert support.
+  // Overridden for two reasons:
+  // - demux reads the resume point from _index_state row id=1 only (loadIndexState).
+  //   A save() without an id inserted a fresh serial row per block, so id=1 never
+  //   existed and every restart replayed from block 1. Upsert row 1 explicitly.
+  // - Re-processed blocks (e.g. after switching from NodeosActionReader) would crash
+  //   on _block_number_txid's duplicate key, since that table has no upsert support.
   async updateIndexState (state, block, isReplay, context) {
     const { blockInfo } = block
-    const fromDb = (await state._index_state.findOne({ id: 1 })) || {}
-    const toSave = Object.assign({}, fromDb, {
-      block_number: blockInfo.blockNumber,
-      block_hash: blockInfo.blockHash,
-      is_replay: isReplay
-    })
-    await state._index_state.save(toSave)
+    await state.instance.none(
+      `INSERT INTO _index_state (id, block_number, block_hash, is_replay) VALUES (1, $1, $2, $3)
+       ON CONFLICT (id) DO UPDATE SET block_number = EXCLUDED.block_number,
+         block_hash = EXCLUDED.block_hash, is_replay = EXCLUDED.is_replay`,
+      [blockInfo.blockNumber, blockInfo.blockHash, isReplay]
+    )
     await state.instance.none(
       'INSERT INTO _block_number_txid (block_number, txid) VALUES ($1, $2) ON CONFLICT DO NOTHING',
       [blockInfo.blockNumber, context.txid]