diff --git a/scripts/generatePmTilesExtracts.ts b/scripts/generatePmTilesExtracts.ts
index 44fe11bf97..3f9d2a8df7 100644
--- a/scripts/generatePmTilesExtracts.ts
+++ b/scripts/generatePmTilesExtracts.ts
@@ -57,10 +57,15 @@ class GeneratePmTilesExtracts extends Script {
         const boundary = 2 << (z - 1)
         for (let x = 0; x < boundary / 2; x++) {
             // We first generate starting from the meridian, as this will prioritize Europe, where the dev is based
-            this.generateColumnIfNeeded(z, x, boundary, maxzoom)
+            for (const promise of this.generateColumnIfNeeded(z, x, boundary, maxzoom)) {
+                yield promise
+            }
+
         }
         for (let x = 0; x < boundary; x++) {
-            this.generateColumnIfNeeded(z, x, boundary, maxzoom)
+            for (const promise of this.generateColumnIfNeeded(z, x, boundary, maxzoom)) {
+                yield promise
+            }
         }
     }