diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 08dfdd7315..888a087684 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -11,9 +11,8 @@ If you would like to contribute, please consider the issues in the current miles
 Please follow the following guidelines:
 
 - Add at least a test to `examples/passing/` and possibly to `examples/failing`.
-- Build the binaries and libs with `cabal build`
-- Install the binaries and libs with `cabal install`.
-- Run `cabal configure --enable-tests && cabal build && cabal test` to build the test suite. You will need `npm` and `node` on your PATH to run the tests.
+- Build the binaries and libs with `stack build`
+- Run the test suite with `stack test`. You will need `npm` and `node` on your PATH to run the tests.
 - Build the core libraries by running the script in `core-tests`.
 
 ## Code Review
diff --git a/INSTALL.md b/INSTALL.md
index 4414a13c2e..4031f9ed65 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -27,16 +27,19 @@ GHC 7.10.1 or newer is required to compile from source. The easiest way is to
 use stack:
 
 ```
-$ stack install --resolver=nightly purescript
+$ stack update
+$ stack unpack purescript
+$ cd purescript-x.y.z  # (replace x.y.z with whichever version you just downloaded)
+$ stack install
 ```
 
 This will then copy the compiler and utilities into `~/.local/bin`.
 
 
-If you don't have stack installed yet there are install instructions
+If you don't have stack installed, there are install instructions
 [here](https://github.com/commercialhaskell/stack/blob/master/doc/install_and_upgrade.md).
 
-If you don't have ghc installed yet, stack will prompt you to run `stack setup`
+If you don't have ghc installed, stack will prompt you to run `stack setup`
 which will install ghc for you.
 
 ## The "curses" library