diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6cbf5d3a40ee9..6e2b87104a203 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node-version: ['10.0', 10.x, '12.0', 12.x, '14.0', 14.x]
         platform:
         - os: ubuntu-latest
           shell: bash
diff --git a/lib/shrinkwrap.js b/lib/shrinkwrap.js
index 74e129297b6cf..60e49f3c82e9b 100644
--- a/lib/shrinkwrap.js
+++ b/lib/shrinkwrap.js
@@ -1,5 +1,7 @@
 const { resolve, basename } = require('path')
-const { promises: { unlink } } = require('fs')
+const util = require('util')
+const fs = require('fs')
+const { unlink } = fs.promises || util.promisify(fs.unlink)
 const Arborist = require('@npmcli/arborist')
 const log = require('npmlog')
 
diff --git a/lib/utils/reify-finish.js b/lib/utils/reify-finish.js
index 76dba06cb570c..9c95e9fcff24e 100644
--- a/lib/utils/reify-finish.js
+++ b/lib/utils/reify-finish.js
@@ -1,7 +1,9 @@
 const reifyOutput = require('./reify-output.js')
 const npm = require('../npm.js')
 const ini = require('ini')
-const {writeFile} = require('fs').promises
+const util = require('util')
+const fs = require('fs')
+const { writeFile } = fs.promises || { writeFile: util.promisify(fs.writeFile) }
 const {resolve} = require('path')
 
 const reifyFinish = async arb => {
diff --git a/test/lib/doctor.js b/test/lib/doctor.js
index db41fc8e5dd56..7663bb5480018 100644
--- a/test/lib/doctor.js
+++ b/test/lib/doctor.js
@@ -167,7 +167,7 @@ test('npm doctor checks ok', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
@@ -256,7 +256,7 @@ test('npm doctor supports color', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping.*not ok/, 'ping output is ok')
     t.match(output, /npm -v.*ok/, 'npm -v output is ok')
-    t.match(output, /node -v.*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry.*ok.*using default/, 'npm config get registry output is ok')
     t.match(output, /which git.*ok/, 'which git output is ok')
     t.match(output, /cached files.*ok/, 'cached files are ok')
@@ -317,7 +317,7 @@ test('npm doctor skips some tests in windows', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cache contents\s*ok/, 'cache contents is ok')
@@ -361,7 +361,7 @@ test('npm doctor ping error E{3}', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*not ok\s*111 this error is 111/, 'ping output contains trimmed error')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
@@ -410,7 +410,7 @@ test('npm doctor generic ping error', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*not ok\s*generic error/, 'ping output contains trimmed error')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
@@ -459,7 +459,7 @@ test('npm doctor outdated npm version', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*not ok/, 'npm -v output is not ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
@@ -508,7 +508,7 @@ test('npm doctor outdated nodejs version', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*not ok/, 'node -v output is not ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
@@ -654,7 +654,7 @@ test('npm doctor file permission checks', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*not ok/, 'cached files are not ok')
@@ -703,7 +703,7 @@ test('npm doctor missing git', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*not ok/, 'which git output is not ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
@@ -761,7 +761,7 @@ test('npm doctor cache verification showed bad content', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
@@ -820,7 +820,7 @@ test('npm doctor cache verification showed reclaimed content', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
@@ -878,7 +878,7 @@ test('npm doctor cache verification showed missing content', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*ok\s*using default/, 'npm config get registry output is ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
@@ -929,7 +929,7 @@ test('npm doctor not using default registry', t => {
     }, 'trackers all finished')
     t.match(output, /npm ping\s*ok/, 'ping output is ok')
     t.match(output, /npm -v\s*ok/, 'npm -v output is ok')
-    t.match(output, /node -v\s*ok/, 'node -v output is ok')
+    t.match(output, /node -v\s*(ok|not ok  Use node v)/, 'node -v output is ok')
     t.match(output, /npm config get registry\s*not ok/, 'npm config get registry output is not ok')
     t.match(output, /which git\s*ok/, 'which git output is ok')
     t.match(output, /cached files\s*ok/, 'cached files are ok')
diff --git a/test/lib/utils/reify-finish.js b/test/lib/utils/reify-finish.js
index d6c7d2e7b2d6d..39277f21a06cb 100644
--- a/test/lib/utils/reify-finish.js
+++ b/test/lib/utils/reify-finish.js
@@ -20,7 +20,7 @@ let expectWrite = false
 const realFs = require('fs')
 const fs = {
   ...realFs,
-  promises: {
+  promises: realFs.promises && {
     ...realFs.promises,
     writeFile: async (path, data) => {
       if (!expectWrite)
@@ -78,3 +78,11 @@ t.test('should write if everything above passes', async t => {
   const data = fs.readFileSync(`${path}/npmrc`, 'utf8').replace(/\r\n/g, '\n')
   t.matchSnapshot(data, 'written config')
 })
+
+t.test('works without fs.promises', async t => {
+  t.doesNotThrow(() => requireInject('../../../lib/utils/reify-finish.js', {
+    fs: { ...fs, promises: null },
+    '../../../lib/npm.js': npm,
+    '../../../lib/utils/reify-output.js': reifyOutput,
+  }))
+})