diff --git a/readme.md b/readme.md
index 5c418fa6..546532d8 100644
--- a/readme.md
+++ b/readme.md
@@ -29,15 +29,15 @@ This can be achieved by:
 
 And both pin/lock to the same version.
 
-# npm@<7
+# Yarn
 
-`npm@<7` does not automatically install `peerDependencies`,
+Yarn does not automatically install `peerDependencies`,
 so if that's what you're using, install them manually.
 Here is an example, but use it only for reference,
 because your decisions regarding version ranges and range specifiers may vary.
 
 ```
-npm install --save-dev \
+yarn add --dev \
   typescript@\* \
   eslint@^8.0.1 \
   eslint-plugin-promise@^6.0.0 \
diff --git a/src/index.test.ts b/src/index.test.ts
index cdeb31ad..3c373f4a 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -367,11 +367,11 @@ test('Exported rule values do not reference eslint-config-standard ones', (t) =>
   }
 })
 
-test('npm install args in readme satisfy peerDeps', async (t) => {
+test('yarn install args in readme satisfy peerDeps', async (t) => {
   const { pkgJson, pkgPath, ourPeerDeps } = await getPkgDetails()
   const readme = (await readFile(resolve(pkgPath, '..', 'readme.md'))).toString()
-  const match = readme.match(/```\n(npm install .*?)```/s)
-  if (match === null) throw new Error()
+  const match = readme.match(/```\n(yarn add .*?)```/s)
+  if (match === null) throw new Error("couldn't find yarn add")
   if (match.length === 0) throw new Error('failed to find code block')
   if (match.length > 2) throw new Error('matched multiple code blocks')
   const installArgRanges = Object.fromEntries(