diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2d8c2bad3f..f9835988c3 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -2698,6 +2698,7 @@ importers:
       '@pnpm/assert-project': 'link:'
       '@types/is-windows': 1.0.0
       '@types/isexe': 2.0.0
+      '@types/node': 12.12.22
       rimraf: 3.0.0
     specifiers:
       '@pnpm/assert-project': 'link:'
@@ -2709,6 +2710,7 @@ importers:
       '@types/is-windows': ^1.0.0
       '@types/isexe': 2.0.0
       '@types/mz': ^2.7.0
+      '@types/node': '12'
       is-windows: 1.0.2
       isexe: 2.0.0
       mz: 2.7.0
@@ -2737,6 +2739,7 @@ importers:
       write-pkg: 4.0.0
       write-yaml-file: 3.0.1
     devDependencies:
+      '@types/node': 12.12.22
       rimraf: 3.0.0
       tslint-config-standard: 9.0.0
       tslint-eslint-rules: 5.4.0
@@ -2744,6 +2747,7 @@ importers:
       '@pnpm/assert-project': 'workspace:*'
       '@pnpm/types': 'workspace:*'
       '@types/mkdirp': 0.5.2
+      '@types/node': '12'
       make-dir: 3.0.0
       rimraf: 3.0.0
       tempy: 0.3.0
diff --git a/privatePackages/assert-project/package.json b/privatePackages/assert-project/package.json
index f58a4b203e..3a65a4ba38 100644
--- a/privatePackages/assert-project/package.json
+++ b/privatePackages/assert-project/package.json
@@ -20,6 +20,7 @@
     "@pnpm/assert-project": "link:",
     "@types/is-windows": "^1.0.0",
     "@types/isexe": "2.0.0",
+    "@types/node": "12",
     "rimraf": "3.0.0"
   },
   "directories": {
diff --git a/privatePackages/prepare/package.json b/privatePackages/prepare/package.json
index 27e1adc397..0604292423 100644
--- a/privatePackages/prepare/package.json
+++ b/privatePackages/prepare/package.json
@@ -15,6 +15,7 @@
     "write-yaml-file": "3.0.1"
   },
   "devDependencies": {
+    "@types/node": "12",
     "rimraf": "3.0.0",
     "tslint-config-standard": "9.0.0",
     "tslint-eslint-rules": "5.4.0"