diff --git a/src/manifest.json b/src/manifest.json
index fd4836db4c..1b9a5b8393 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -94,7 +94,7 @@
   "optional_permissions": [
     "nativeMessaging"
   ],
-  "content_security_policy": "script-src 'self'; object-src 'self'",
+  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
   "commands": {
     "_execute_browser_action": {
       "suggested_key": {