diff --git a/README.md b/README.md
index 7bf6270..aa39c8e 100644
--- a/README.md
+++ b/README.md
@@ -27,5 +27,5 @@ the maintenance burden of supporting more event types in Hydrogen.
 
 ## Prerequisites
 
-- Node.js v17
-  - We only need v17 because it includes `require('crypto').webcrypto`
+- Node.js v16
+  - We only need v16 because it includes [`require('crypto').webcrypto.subtle`](https://nodejs.org/docs/latest-v16.x/api/webcrypto.html#cryptosubtle) for [Matrix encryption (olm) which can't be disabled in Hydrogen](https://github.com/vector-im/hydrogen-web/issues/579) yet.
diff --git a/package.json b/package.json
index 553e7dc..e388514 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "prettier": "prettier"
   },
   "engines" : { 
-    "node" : ">=17.0.0" 
+    "node" : ">=16.0.0" 
   },
   "devDependencies": {
     "eslint": "^8.8.0",