diff --git a/sdks/cli/platforms/darwin-arm64/package.json b/sdks/cli/platforms/darwin-arm64/package.json
index 51ccb8f..39c64da 100644
--- a/sdks/cli/platforms/darwin-arm64/package.json
+++ b/sdks/cli/platforms/darwin-arm64/package.json
@@ -13,6 +13,9 @@
   "cpu": [
     "arm64"
   ],
+  "scripts": {
+    "postinstall": "chmod +x bin/sandbox-agent || true"
+  },
   "files": [
     "bin"
   ]
diff --git a/sdks/cli/platforms/darwin-x64/package.json b/sdks/cli/platforms/darwin-x64/package.json
index 34b6a81..ad8cd44 100644
--- a/sdks/cli/platforms/darwin-x64/package.json
+++ b/sdks/cli/platforms/darwin-x64/package.json
@@ -13,6 +13,9 @@
   "cpu": [
     "x64"
   ],
+  "scripts": {
+    "postinstall": "chmod +x bin/sandbox-agent || true"
+  },
   "files": [
     "bin"
   ]
diff --git a/sdks/cli/platforms/linux-x64/package.json b/sdks/cli/platforms/linux-x64/package.json
index 9d330e5..62b2a5d 100644
--- a/sdks/cli/platforms/linux-x64/package.json
+++ b/sdks/cli/platforms/linux-x64/package.json
@@ -13,6 +13,9 @@
   "cpu": [
     "x64"
   ],
+  "scripts": {
+    "postinstall": "chmod +x bin/sandbox-agent || true"
+  },
   "files": [
     "bin"
   ]