diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8c66d4f..8a615c0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,18 +12,6 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - 6
-          - 7
-          - 8
-          - 9
-          - 10
-          - 11
-          - 12
-          - 13
-          - 14
-          - 15
-          - 16
-          - 17
           - 18
           - 19
           - 20
diff --git a/README.md b/README.md
index 32f3341..941ae88 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
 commands, providing an easy solution for simple Unix-like, cross-platform
 commands in npm package scripts.
 
-`shx` is proudly tested on every node release since <!-- start minVersion -->`v6`<!-- stop minVersion -->!
+`shx` is proudly tested on every node release since <!-- start minVersion -->`v18`<!-- stop minVersion -->!
 
 ## Difference Between ShellJS and shx
 
diff --git a/package.json b/package.json
index c0907cb..1fe076c 100644
--- a/package.json
+++ b/package.json
@@ -56,24 +56,24 @@
     "babel-register": "^6.7.2",
     "concurrently": "^5.3.0",
     "eslint": "^5.16.0",
-    "eslint-import-resolver-node": "0.3.7",
     "eslint-config-airbnb-base": "^14.2.1",
+    "eslint-import-resolver-node": "0.3.7",
     "eslint-plugin-import": "^2.26.0",
     "js-yaml": "^3.12.0",
     "mocha": "^6.2.3",
     "nyc": "^14.1.1",
     "rimraf": "^2.5.2",
     "shelljs-changelog": "^0.2.6",
-    "shelljs-plugin-open": "^0.2.1",
+    "shelljs-plugin-open": "^0.3.0",
     "shelljs-release": "^0.5.2",
     "should": "^13.2.3",
     "watch": "^1.0.2"
   },
   "dependencies": {
     "minimist": "^1.2.6",
-    "shelljs": "^0.8.5"
+    "shelljs": "^0.9.1"
   },
   "engines": {
-    "node": ">=6"
+    "node": ">=18"
   }
 }
diff --git a/scripts/check-node-support.js b/scripts/check-node-support.js
index 6b0f6b6..a072b97 100755
--- a/scripts/check-node-support.js
+++ b/scripts/check-node-support.js
@@ -8,7 +8,7 @@ var yaml = require('js-yaml');
 var shell = require('shelljs');
 
 // This is the authoritative list of supported node versions.
-var MIN_NODE_VERSION = 6;
+var MIN_NODE_VERSION = 18;
 var MAX_NODE_VERSION = 22;
 
 function checkReadme(minNodeVersion) {
diff --git a/src/shx.js b/src/shx.js
index 5a21f4f..f13e102 100644
--- a/src/shx.js
+++ b/src/shx.js
@@ -43,8 +43,7 @@ export function shx(argv) {
   const parsedArgs = minimist(argv.slice(2), { stopEarly: true, boolean: true });
   if (parsedArgs.version) {
     const shxVersion = require('../package.json').version;
-    const shelljsVersion = require('shelljs/package.json').version;
-    console.log(`shx v${shxVersion} (using ShellJS v${shelljsVersion})`);
+    console.log(`shx v${shxVersion}`);
     return EXIT_CODES.SUCCESS;
   }
   const [fnName, ...args] = parsedArgs._;
diff --git a/test/specs/cli.js b/test/specs/cli.js
index 59f27aa..2d164df 100644
--- a/test/specs/cli.js
+++ b/test/specs/cli.js
@@ -122,7 +122,7 @@ describe('cli', () => {
   describe('global flags', () => {
     it('supports --version', () => {
       const output = cli('--version');
-      output.stdout.should.match(/shx v\S+ \(using ShellJS v\S+\)\n/);
+      output.stdout.should.match(/shx v\S+\n/);
       output.stderr.should.equal('');
       output.code.should.equal(0);
     });
@@ -351,7 +351,7 @@ describe('cli', () => {
     it('works with /g and -i', () => {
       const output = cli('sed', '-i', 's/foo/bar/g', testFileName1);
       const expected = 'bar\nbarsomething\nbarbarsomething\n';
-      output.stdout.should.equal(expected);
+      output.stdout.should.equal('');
       shell.cat(testFileName1).stdout.should.equal(expected);
     });