diff --git a/src/services/RedstoneServiceV3.ts b/src/services/RedstoneServiceV3.ts
index cf51b31..67d9888 100644
--- a/src/services/RedstoneServiceV3.ts
+++ b/src/services/RedstoneServiceV3.ts
@@ -70,28 +70,28 @@ export class RedstoneServiceV3 {
   public async launch(): Promise<void> {
     this.liquidationPreviewUpdates = this.liquidationPreviewUpdates.bind(this);
 
-    // if (this.config.optimistic) {
-    //   const block = await this.client.pub.getBlock({
-    //     blockNumber: this.client.anvilForkBlock,
-    //   });
-    //   if (!block) {
-    //     throw new Error(`cannot get latest block`);
-    //   }
-    //   // https://github.com/redstone-finance/redstone-oracles-monorepo/blob/c7569a8eb7da1d3ad6209dfcf59c7ca508ea947b/packages/sdk/src/request-data-packages.ts#L82
-    //   // we round the timestamp to full minutes for being compatible with
-    //   // oracle-nodes, which usually work with rounded 10s and 60s intervals
-    //   //
-    //   // Also, when forking anvil->anvil (when running on testnets) block.timestamp can be in future because min ts for block is 1 seconds,
-    //   // and scripts can take dozens of blocks (hundreds for faucet). So we take min value;
-    //   const now = new Date().getTime();
-    //   const anvilTs = 10 * Math.floor(Number(block.timestamp) / 10) * 1000;
-    //   const fromNowTs = 60_000 * Math.floor(now / 60_000 - 60_000);
-    //   this.#optimisticTimestamp = Math.min(anvilTs, fromNowTs);
-    //   const delta = Math.ceil((now - this.#optimisticTimestamp) / 1000);
-    //   this.log.info(
-    //     `will use optimistic timestamp: ${this.#optimisticTimestamp} (delta: ${delta}s)`,
-    //   );
-    // }
+    if (this.config.optimistic) {
+      const block = await this.client.pub.getBlock({
+        blockNumber: this.client.anvilForkBlock,
+      });
+      if (!block) {
+        throw new Error("cannot get latest block");
+      }
+      // https://github.com/redstone-finance/redstone-oracles-monorepo/blob/c7569a8eb7da1d3ad6209dfcf59c7ca508ea947b/packages/sdk/src/request-data-packages.ts#L82
+      // we round the timestamp to full minutes for being compatible with
+      // oracle-nodes, which usually work with rounded 10s and 60s intervals
+      //
+      // Also, when forking anvil->anvil (when running on testnets) block.timestamp can be in future because min ts for block is 1 seconds,
+      // and scripts can take dozens of blocks (hundreds for faucet). So we take min value;
+      const now = new Date().getTime();
+      const anvilTs = 10 * Math.floor(Number(block.timestamp) / 10) * 1000;
+      const fromNowTs = 10_000 * Math.floor(now / 10_000 - 10_000);
+      this.#optimisticTimestamp = Math.min(anvilTs, fromNowTs);
+      const delta = Math.ceil((now - this.#optimisticTimestamp) / 1000);
+      this.log.info(
+        `will use optimistic timestamp: ${this.#optimisticTimestamp} (delta: ${delta}s)`,
+      );
+    }
   }
 
   public async updatesForTokens(
@@ -246,7 +246,7 @@ export class RedstoneServiceV3 {
 
     const dataPayload = await new DataServiceWrapper({
       dataServiceId,
-      dataFeeds: [dataFeedId],
+      dataPackagesIds: [dataFeedId],
       uniqueSignersCount,
       historicalTimestamp: CACHE_BLOCKLIST.has(dataFeedId)
         ? undefined