diff --git a/packages/crypto-node/package.json b/packages/crypto-node/package.json
index ced964fe..caa1f313 100644
--- a/packages/crypto-node/package.json
+++ b/packages/crypto-node/package.json
@@ -7,6 +7,7 @@
     "private": true,
     "license": "MIT",
     "type": "module",
+    "sideEffects": false,
     "scripts": {
         "build:bin": "node-gyp configure && node-gyp -j 16 build ",
         "build:dev": "node-gyp -j 16 build --debug",
diff --git a/packages/http-proxy/package.json b/packages/http-proxy/package.json
index b9c83507..e197b016 100644
--- a/packages/http-proxy/package.json
+++ b/packages/http-proxy/package.json
@@ -7,6 +7,7 @@
     "license": "MIT",
     "main": "index.ts",
     "type": "module",
+    "sideEffects": false,
     "scripts": {
         "docs": "typedoc",
         "build": "pnpm run -w build-package http-proxy"
diff --git a/packages/i18n/package.json b/packages/i18n/package.json
index acd5d728..6498bf6b 100644
--- a/packages/i18n/package.json
+++ b/packages/i18n/package.json
@@ -7,6 +7,7 @@
     "license": "MIT",
     "main": "src/index.ts",
     "type": "module",
+    "sideEffects": false,
     "scripts": {
         "build": "pnpm run -w build-package i18n"
     },
diff --git a/packages/mtproxy/package.json b/packages/mtproxy/package.json
index 96b811a8..870f92f4 100644
--- a/packages/mtproxy/package.json
+++ b/packages/mtproxy/package.json
@@ -7,6 +7,7 @@
     "license": "MIT",
     "main": "index.ts",
     "type": "module",
+    "sideEffects": false,
     "scripts": {
         "docs": "typedoc",
         "build": "pnpm run -w build-package mtproxy"
diff --git a/packages/node/package.json b/packages/node/package.json
index 364b13e3..b08371bb 100644
--- a/packages/node/package.json
+++ b/packages/node/package.json
@@ -7,6 +7,7 @@
     "license": "MIT",
     "main": "src/index.ts",
     "type": "module",
+    "sideEffects": false,
     "scripts": {
         "docs": "typedoc",
         "build": "pnpm run -w build-package node"
diff --git a/packages/socks-proxy/package.json b/packages/socks-proxy/package.json
index e3c89687..dd69b58c 100644
--- a/packages/socks-proxy/package.json
+++ b/packages/socks-proxy/package.json
@@ -7,6 +7,7 @@
     "license": "MIT",
     "main": "index.ts",
     "type": "module",
+    "sideEffects": false,
     "scripts": {
         "docs": "typedoc",
         "build": "pnpm run -w build-package socks-proxy"
diff --git a/packages/sqlite/package.json b/packages/sqlite/package.json
index 2e99d699..dec7c13a 100644
--- a/packages/sqlite/package.json
+++ b/packages/sqlite/package.json
@@ -7,6 +7,7 @@
     "license": "MIT",
     "main": "src/index.ts",
     "type": "module",
+    "sideEffects": false,
     "distOnlyFields": {
         "exports": {
             ".": {