diff --git a/INSTALL.md b/INSTALL.md
index d9411db021d5784771951d06fdd13070b7fcf449..3c694ba58222f8d0ac2844519b552de0f0abca93 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -32,6 +32,17 @@ terminal:
  $ [sudo] xcode-select --install
 ```
 
+##Protoc
+
+By default gRPC uses [protocol buffers](https://github.com/google/protobuf),
+you will need the `protoc` compiler to generate stub server and client code.
+
+If you compile gRPC from source, as described below, the Makefile will
+automatically try and compile the `protoc` in third_party if you cloned the
+repository recursively and it detects that you don't already have it
+installed.
+
+
 #Build from Source
 
 For developers who are interested to contribute, here is how to compile the
diff --git a/src/node/README.md b/src/node/README.md
index b46b98624327d3a6569fd73fa3b0d0d9306c340c..3501b54a6654d6ededd90c8f7de8da7771376d2a 100644
--- a/src/node/README.md
+++ b/src/node/README.md
@@ -5,7 +5,7 @@
 Beta
 
 ## PREREQUISITES
-- `node`: This requires `node` to be installed. If you instead have the `nodejs` executable on Debian, you should install the [`nodejs-legacy`](https://packages.debian.org/sid/nodejs-legacy) package.
+- `node`: This requires `node` to be installed, version `0.12` or above. If you instead have the `nodejs` executable on Debian, you should install the [`nodejs-legacy`](https://packages.debian.org/sid/nodejs-legacy) package.
 
 ## INSTALLATION