diff --git a/packages/bolt-connection/package.json b/packages/bolt-connection/package.json
index 674927047..6b193a446 100644
--- a/packages/bolt-connection/package.json
+++ b/packages/bolt-connection/package.json
@@ -4,6 +4,7 @@
   "description": "Implements the connection with the Neo4j Database using the Bolt Protocol",
   "main": "lib/index.js",
   "types": "types/index.d.ts",
+  "sideEffects": false,
   "scripts": {
     "build": "tsc",
     "test": "jest --passWithNoTests",
diff --git a/packages/core/package.json b/packages/core/package.json
index 94ed4f0b4..8f787eea7 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -4,6 +4,7 @@
   "description": "Internals of neo4j-driver",
   "main": "lib/index.js",
   "types": "types/index.d.ts",
+  "sideEffects": false,
   "scripts": {
     "build": "tsc -p tsconfig.build.json",
     "build::es6": "tsc -p tsconfig.build.json --target ES6 --outdir lib6",
diff --git a/packages/neo4j-driver-lite/package.json b/packages/neo4j-driver-lite/package.json
index 32fa5164c..2fd83343b 100644
--- a/packages/neo4j-driver-lite/package.json
+++ b/packages/neo4j-driver-lite/package.json
@@ -4,6 +4,7 @@
   "description": "The official Neo4j lite driver for Javascript",
   "main": "lib/index.js",
   "types": "types/index.d.ts",
+  "sideEffects": false,
   "scripts": {
     "build": "tsc -p tsconfig.build.json",
     "build::browser": "rollup --config rollup.config.js && npm run minify",
diff --git a/packages/neo4j-driver/package.json b/packages/neo4j-driver/package.json
index 364b12d75..c0d5cbed5 100644
--- a/packages/neo4j-driver/package.json
+++ b/packages/neo4j-driver/package.json
@@ -11,6 +11,7 @@
   "engines": {
     "node": ">=18.0.0"
   },
+  "sideEffects": false,
   "scripts": {
     "lint": "eslint --fix --ext .js ./",
     "test": "gulp test",