diff --git a/package-lock.json b/package-lock.json
index ad7704b81..df5a79e94 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -240,9 +240,12 @@
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-            "resolved": "https://registry.npmjs.org/@types/node/-/node-18.14.0.tgz",
-            "integrity": "sha512-5EWrvLmglK+imbCJY0+INViFWUHg1AHel1sq4ZVSfdcNqGy9Edv3UB9IIzzg+xPaUcAgZYcfVs2fBcwDeZzU0A=="
+            "version": "20.11.5",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-20.11.5.tgz",
+            "integrity": "sha512-g557vgQjUUfN76MZAN/dt1z3dzcUsimuysco0KeluHgrPdJXkP/XdAURgyO2W9fZWHRtRBiVKzKn8vyOAwlG+w==",
+            "dependencies": {
+                "undici-types": "~5.26.4"
+            }
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         "node_modules/@types/pako": {
             "version": "1.0.0",
@@ -2107,6 +2110,11 @@
                 "node": ">=8"
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+        "node_modules/undici-types": {
+            "version": "5.26.5",
+            "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
+            "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA=="
+        },
         "node_modules/unicode-properties": {
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             "resolved": "https://registry.npmjs.org/unicode-properties/-/unicode-properties-1.4.1.tgz",
@@ -2368,7 +2376,7 @@
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                 "@types/js-base64": "^3.3.1",
-                "@types/node": "18.14.0",
+                "@types/node": "20.11.5",
                 "@types/pako": "^1.0.0",
                 "@types/pluralize": "0.0.30",
                 "@types/readable-stream": "2.3.15",
@@ -2406,7 +2414,7 @@
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-                "@types/node": "18.14.0",
+                "@types/node": "20.11.5",
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                 "typescript": "4.9.5"
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@@ -2420,7 +2428,7 @@
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             },
             "devDependencies": {
-                "@types/node": "18.14.0",
+                "@types/node": "20.11.5",
                 "tslint": "^6.1.3"
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@@ -2655,9 +2663,12 @@
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-            "version": "18.14.0",
-            "resolved": "https://registry.npmjs.org/@types/node/-/node-18.14.0.tgz",
-            "integrity": "sha512-5EWrvLmglK+imbCJY0+INViFWUHg1AHel1sq4ZVSfdcNqGy9Edv3UB9IIzzg+xPaUcAgZYcfVs2fBcwDeZzU0A=="
+            "version": "20.11.5",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-20.11.5.tgz",
+            "integrity": "sha512-g557vgQjUUfN76MZAN/dt1z3dzcUsimuysco0KeluHgrPdJXkP/XdAURgyO2W9fZWHRtRBiVKzKn8vyOAwlG+w==",
+            "requires": {
+                "undici-types": "~5.26.4"
+            }
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         "@types/pako": {
             "version": "1.0.0",
@@ -3693,7 +3704,7 @@
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                 "@types/browser-or-node": "^1.3.0",
                 "@types/js-base64": "^3.3.1",
-                "@types/node": "18.14.0",
+                "@types/node": "20.11.5",
                 "@types/pako": "^1.0.0",
                 "@types/pluralize": "0.0.30",
                 "@types/readable-stream": "2.3.15",
@@ -3738,7 +3749,7 @@
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             "requires": {
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-                "@types/node": "18.14.0",
+                "@types/node": "20.11.5",
                 "collection-utils": "^1.0.1",
                 "graphql": "^0.11.7",
                 "quicktype-core": "file:../quicktype-core",
@@ -3750,7 +3761,7 @@
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             "requires": {
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-                "@types/node": "18.14.0",
+                "@types/node": "20.11.5",
                 "quicktype-core": "file:../quicktype-core",
                 "tslint": "^6.1.3",
                 "typescript": "4.9.5"
@@ -4170,6 +4181,11 @@
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         },
+        "undici-types": {
+            "version": "5.26.5",
+            "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
+            "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA=="
+        },
         "unicode-properties": {
             "version": "1.4.1",
             "resolved": "https://registry.npmjs.org/unicode-properties/-/unicode-properties-1.4.1.tgz",
diff --git a/packages/quicktype-core/package.json b/packages/quicktype-core/package.json
index 1ca3eb970..ff0c090f2 100644
--- a/packages/quicktype-core/package.json
+++ b/packages/quicktype-core/package.json
@@ -31,7 +31,7 @@
     "devDependencies": {
         "@types/browser-or-node": "^1.3.0",
         "@types/js-base64": "^3.3.1",
-        "@types/node": "18.14.0",
+        "@types/node": "20.11.5",
         "@types/pako": "^1.0.0",
         "@types/pluralize": "0.0.30",
         "@types/readable-stream": "2.3.15",
diff --git a/packages/quicktype-graphql-input/package.json b/packages/quicktype-graphql-input/package.json
index ae4b23648..05e03c2c7 100644
--- a/packages/quicktype-graphql-input/package.json
+++ b/packages/quicktype-graphql-input/package.json
@@ -17,7 +17,7 @@
         "graphql": "^0.11.7"
     },
     "devDependencies": {
-        "@types/node": "18.14.0",
+        "@types/node": "20.11.5",
         "@types/graphql": "^0.11.7",
         "typescript": "4.9.5",
         "tslint": "^6.1.3"
diff --git a/packages/quicktype-typescript-input/package.json b/packages/quicktype-typescript-input/package.json
index 9926b394e..ee2b9571a 100644
--- a/packages/quicktype-typescript-input/package.json
+++ b/packages/quicktype-typescript-input/package.json
@@ -17,7 +17,7 @@
         "@mark.probst/typescript-json-schema": "0.55.0"
     },
     "devDependencies": {
-        "@types/node": "18.14.0",
+        "@types/node": "20.11.5",
         "tslint": "^6.1.3"
     },
     "files": [