diff --git a/.nvmrc b/.nvmrc
index b6a7d89..3c03207 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-16
+18
diff --git a/README.md b/README.md
index 3369fb2..88c714a 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Don’t confuse this package with [govspeak](https://github.com/alphagov/govspea
 
 ## Requirements
 
-Node.js v16 or later.
+Node.js v18 or later.
 
 ## Installation
 
diff --git a/package-lock.json b/package-lock.json
index f36cda1..835128a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,7 +21,7 @@
         "stylelint-config-gds": "^0.2.0"
       },
       "engines": {
-        "node": ">=16.0.0"
+        "node": ">=18"
       }
     },
     "node_modules/@babel/code-frame": {
diff --git a/package.json b/package.json
index 2c41a8c..0dc56c6 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "stylelint-config-gds": "^0.2.0"
   },
   "engines": {
-    "node": ">=16.0.0"
+    "node": ">=18"
   },
   "exports": {
     ".": {