diff --git a/.gitignore b/.gitignore
index e62bd9e..48570a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@
 !.gitignore
 !.pre-commit-config.yaml
 !.prettierrc
+!.nvmrc
 
 # Other ignores
 node_modules
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..b009dfb
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+lts/*
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index b7b0c9e..ae33c59 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -5,10 +5,7 @@
 ci:
   # https://github.com/pre-commit-ci/issues/issues/83
   autoupdate_schedule: quarterly
-  skip: [prettier]
-
-default_language_version:
-  python: pypy3
+  skip: [pnpm-install-dev, prettier]
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
@@ -32,17 +29,27 @@ repos:
       - id: check-pre-commit-ci-config
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.28.5
+    rev: 0.28.6
     hooks:
       - id: check-dependabot
       - id: check-github-workflows
 
   - repo: local
     hooks:
+      - id: pnpm-install-dev
+        name: Install pnpm dev dependencies
+        entry: corepack pnpm install -D
+        language: system
+        always_run: true
+        #verbose: true
+        pass_filenames: false
       - id: prettier
         name: prettier
-        entry: pnpm exec prettier --cache --ignore-unknown --write
+        entry: corepack pnpm exec prettier --cache --ignore-unknown --write
         language: system
+        # Better handled by pretty-format-json from pre-commit-hooks.
+        # Remember to have *.json in .prettierignore!
+        exclude_types: [json]
 
   - repo: https://github.com/editorconfig-checker/editorconfig-checker.python
     rev: "2.7.3"
diff --git a/package.json b/package.json
index d486810..8632290 100644
--- a/package.json
+++ b/package.json
@@ -2,5 +2,6 @@
 	"devDependencies": {
 		"prettier": "3.3.2",
 		"prettier-plugin-sh": "0.14.0"
-	}
+	},
+	"packageManager": "pnpm@9.4.0+sha512.f549b8a52c9d2b8536762f99c0722205efc5af913e77835dbccc3b0b0b2ca9e7dc8022b78062c17291c48e88749c70ce88eb5a74f1fa8c4bf5e18bb46c8bd83a"
 }