diff --git a/backend/src/api/disk-cache.ts b/backend/src/api/disk-cache.ts
index c50d3cef8..8d5745a3b 100644
--- a/backend/src/api/disk-cache.ts
+++ b/backend/src/api/disk-cache.ts
@@ -124,7 +124,7 @@ class DiskCache {
     }
   }
 
-  loadMempoolCache(): void {
+  async loadMempoolCache(): Promise<void> {
     if (!fs.existsSync(DiskCache.FILE_NAME)) {
       return;
     }
@@ -168,7 +168,7 @@ class DiskCache {
         }
       }
 
-      memPool.setMempool(data.mempool);
+      await memPool.setMempool(data.mempool);
       blocks.setBlocks(data.blocks);
       blocks.setBlockSummaries(data.blockSummaries || []);
     } catch (e) {
diff --git a/backend/src/api/mempool-blocks.ts b/backend/src/api/mempool-blocks.ts
index aa2804379..cd6243bc1 100644
--- a/backend/src/api/mempool-blocks.ts
+++ b/backend/src/api/mempool-blocks.ts
@@ -205,7 +205,7 @@ class MempoolBlocks {
   public async updateBlockTemplates(newMempool: { [txid: string]: TransactionExtended }, added: TransactionExtended[], removed: string[], saveResults: boolean = false): Promise<void> {
     if (!this.txSelectionWorker) {
       // need to reset the worker
-      this.makeBlockTemplates(newMempool, saveResults);
+      await this.makeBlockTemplates(newMempool, saveResults);
       return;
     }
     // prepare a stripped down version of the mempool with only the minimum necessary data
diff --git a/backend/src/api/mempool.ts b/backend/src/api/mempool.ts
index 79a2001de..4f5a12962 100644
--- a/backend/src/api/mempool.ts
+++ b/backend/src/api/mempool.ts
@@ -80,13 +80,13 @@ class Mempool {
     return this.mempoolCache;
   }
 
-  public setMempool(mempoolData: { [txId: string]: TransactionExtended }) {
+  public async setMempool(mempoolData: { [txId: string]: TransactionExtended }) {
     this.mempoolCache = mempoolData;
     if (this.mempoolChangedCallback) {
       this.mempoolChangedCallback(this.mempoolCache, [], []);
     }
     if (this.asyncMempoolChangedCallback) {
-      this.asyncMempoolChangedCallback(this.mempoolCache, [], []);
+      await this.asyncMempoolChangedCallback(this.mempoolCache, [], []);
     }
   }
 
diff --git a/backend/src/index.ts b/backend/src/index.ts
index a7f805313..440a24de9 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -120,7 +120,7 @@ class Server {
     await poolsUpdater.updatePoolsJson(); // Needs to be done before loading the disk cache because we sometimes wipe it
     await syncAssets.syncAssets$();
     if (config.MEMPOOL.ENABLED) {
-      diskCache.loadMempoolCache();
+      await diskCache.loadMempoolCache();
     }
 
     if (config.STATISTICS.ENABLED && config.DATABASE.ENABLED && cluster.isPrimary) {