diff --git a/package.json b/package.json
index c0013a5be..3eec4438b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@paraswap/dex-lib",
-  "version": "2.37.0",
+  "version": "2.37.1",
   "main": "build/index.js",
   "types": "build/index.d.ts",
   "repository": "https://github.com/paraswap/paraswap-dex-lib",
diff --git a/src/dex/hashflow/hashflow.ts b/src/dex/hashflow/hashflow.ts
index dc7dbd2ff..e64bf8675 100644
--- a/src/dex/hashflow/hashflow.ts
+++ b/src/dex/hashflow/hashflow.ts
@@ -62,6 +62,7 @@ export class Hashflow extends SimpleExchange implements IDex<HashflowData> {
   readonly isStatePollingDex = true;
   readonly hasConstantPriceLargeAmounts = false;
   readonly needWrapNative = false;
+  readonly needsSequentialPreprocessing = true;
   readonly isFeeOnTransferSupported = false;
   private api: HashflowApi;
   private rateFetcher: RateFetcher;
@@ -737,7 +738,7 @@ export class Hashflow extends SimpleExchange implements IDex<HashflowData> {
         );
         await this.setBlacklist(options.txOrigin);
       } else {
-        if(e instanceof TooStrictSlippageCheckError) {
+        if (e instanceof TooStrictSlippageCheckError) {
           this.logger.warn(
             `${this.dexKey}-${this.network}: Market Maker ${mm} failed to build transaction on side ${side} with too strict slippage. Skipping restriction`,
           );
diff --git a/src/dex/idex.ts b/src/dex/idex.ts
index a5e35cde4..3dd20f53d 100644
--- a/src/dex/idex.ts
+++ b/src/dex/idex.ts
@@ -20,6 +20,7 @@ import { IDexHelper } from '../dex-helper/idex-helper';
 
 export interface IDexTxBuilder<ExchangeData, DirectParam = null> {
   needWrapNative: boolean;
+  needsSequentialPreprocessing?: boolean;
 
   // Returns the ETH fee required to swap
   // It is optional for a DEX to implement this
diff --git a/src/dex/index.ts b/src/dex/index.ts
index 4595ad24f..389106deb 100644
--- a/src/dex/index.ts
+++ b/src/dex/index.ts
@@ -315,4 +315,10 @@ export class DexAdapterService {
       ? this.sellAdapters[specialDexKey]
       : this.buyAdapters[specialDexKey];
   }
+
+  doesPreProcessingRequireSequentiality(dexKey: string): boolean {
+    const dex = this.getDexByKey(dexKey);
+
+    return !!dex.needsSequentialPreprocessing;
+  }
 }
diff --git a/src/dex/uniswap-v3/config.ts b/src/dex/uniswap-v3/config.ts
index 816d1d4e0..5a2a8d819 100644
--- a/src/dex/uniswap-v3/config.ts
+++ b/src/dex/uniswap-v3/config.ts
@@ -273,7 +273,7 @@ export const UniswapV3Config: DexConfigMap<DexParams> = {
         'https://api.studio.thegraph.com/query/44554/uniswap-v3/version/latest',
     },
   },
-  'Retro': {
+  Retro: {
     [Network.POLYGON]: {
       factory: '0x91e1B99072f238352f59e58de875691e20Dc19c1',
       quoter: '0xfe08be075758935cb6cb9318d1fbb60920416d4e',
@@ -284,8 +284,7 @@ export const UniswapV3Config: DexConfigMap<DexParams> = {
       chunksCount: 10,
       initRetryFrequency: 10,
       initHash: `0x817e07951f93017a93327ac8cc31e946540203a19e1ecc37bc1761965c2d1090`,
-      subgraphURL:
-        'https://api.thegraph.com/subgraphs/name/ruvlol/univ3-test',
+      subgraphURL: 'https://api.thegraph.com/subgraphs/name/ruvlol/univ3-test',
     },
   },
 };
diff --git a/src/dex/uniswap-v3/uniswap-v3-integration.test.ts b/src/dex/uniswap-v3/uniswap-v3-integration.test.ts
index 640ff7546..75a27e43d 100644
--- a/src/dex/uniswap-v3/uniswap-v3-integration.test.ts
+++ b/src/dex/uniswap-v3/uniswap-v3-integration.test.ts
@@ -1101,7 +1101,6 @@ describe('SushiSwapV3', () => {
   });
 });
 
-
 describe('Retro', () => {
   const dexKey = 'Retro';
 
@@ -1233,14 +1232,10 @@ describe('Retro', () => {
     });
 
     it('getTopPoolsForToken', async function () {
-      const poolLiquidity = await retro.getTopPoolsForToken(
-        TokenB.address,
-        10,
-      );
+      const poolLiquidity = await retro.getTopPoolsForToken(TokenB.address, 10);
       console.log(`${TokenASymbol} Top Pools:`, poolLiquidity);
 
       checkPoolsLiquidity(poolLiquidity, TokenB.address, dexKey);
     });
   });
-
 });