diff --git a/std/node/README.md b/std/node/README.md
index 53168e6c25..ec2d90ddfd 100644
--- a/std/node/README.md
+++ b/std/node/README.md
@@ -9,7 +9,7 @@ deno standard library as it's a compatibility module.
 ## Supported Builtins
 
 - [ ] assert
-- [ ] buffer
+- [x] buffer
 - [ ] child_process
 - [ ] cluster
 - [ ] console