diff --git a/README.md b/README.md
index 5d5064c..c73730c 100644
--- a/README.md
+++ b/README.md
@@ -449,9 +449,12 @@ We're deferring to built-in
 which is considered cryptographically secure (CSPRNG).
 In the past, browsers had bugs that made it weak: it may happen again.
 
+Implementing a userspace CSPRNG to get resilient to getRandomValues weakness
+is even worse: there is no reliable userspace source of quality entropy.
+
 ## Speed
 
-To summarize, noble is the fastest JS implementation.
+To summarize, noble is the fastest JS implementation of Salsa, ChaCha and AES.
 
 You can gain additional speed-up and
 avoid memory allocations by passing `output`
diff --git a/package.json b/package.json
index f0d1baf..6b86236 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "bench:install": "cd benchmark && npm install && cd ../../",
     "build": "npm run build:clean; tsc && tsc -p tsconfig.esm.json",
     "build:release": "cd build; npm i; npm run build",
-    "build:clean": "rm *.{js,d.ts,js.map,d.ts.map} esm/*.{js,d.ts,js.map,d.ts.map} 2> /dev/null; rm -r esm/webcrypto 2> /dev/null",
+    "build:clean": "rm *.{js,d.ts,js.map,d.ts.map} esm/*.{js,d.ts,js.map,d.ts.map} 2> /dev/null; rm -r webcrypto esm/webcrypto 2> /dev/null",
     "lint": "prettier --check 'src/**/*.{js,ts}' 'test/**/*.{js,ts,mjs}'",
     "format": "prettier --write 'src/**/*.{js,ts}' 'test/**/*.{js,ts,mjs}'",
     "test": "node test/index.js"