diff --git a/bin/wasm-node/CHANGELOG.md b/bin/wasm-node/CHANGELOG.md
index 1d7ad5b33e..0d08058851 100644
--- a/bin/wasm-node/CHANGELOG.md
+++ b/bin/wasm-node/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Changed
+
+- The JavaScript code now targets ES6. This should ensure compatibility on a wider range of platforms. ([#2565](https://github.com/paritytech/smoldot/pull/2565))
+
 ## 0.6.26 - 2022-07-20
 
 ### Added
diff --git a/bin/wasm-node/javascript/tsconfig-cjs.json b/bin/wasm-node/javascript/tsconfig-cjs.json
index d3c03e1211..052d0ad10e 100644
--- a/bin/wasm-node/javascript/tsconfig-cjs.json
+++ b/bin/wasm-node/javascript/tsconfig-cjs.json
@@ -2,10 +2,11 @@
   "extends": "./tsconfig.json",
   "compilerOptions": {
     "lib": [
-      "es2015"
+      "es6"
     ],
-    "target": "es2015",
+    "target": "es6",
     "module": "commonjs",
+    "downlevelIteration": true,
     "outDir": "./dist/cjs",
   },
 }
diff --git a/bin/wasm-node/javascript/tsconfig-mjs.json b/bin/wasm-node/javascript/tsconfig-mjs.json
index fbcf0562de..d7a08123f1 100644
--- a/bin/wasm-node/javascript/tsconfig-mjs.json
+++ b/bin/wasm-node/javascript/tsconfig-mjs.json
@@ -2,10 +2,11 @@
   "extends": "./tsconfig.json",
   "compilerOptions": {
     "lib": [
-      "es2020"
+      "es6",
     ],
-    "target": "es2020",
-    "module": "es2020",
+    "target": "es6",
+    "module": "es6",
+    "downlevelIteration": true,
     "outDir": "./dist/mjs",
   }
 }