diff --git a/package-lock.json b/package-lock.json
index 3acc0c7..33c3740 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
         "@types/node": "20.10.4",
         "c8": "8.0.1",
         "clean-pkg-json": "1.2.0",
-        "dependency-cruiser": "15.5.0",
+        "dependency-cruiser": "16.0.0-beta-4",
         "husky": "8.0.3",
         "lint-staged": "15.2.0",
         "prettier": "3.1.1",
@@ -823,9 +823,9 @@
       }
     },
     "node_modules/dependency-cruiser": {
-      "version": "15.5.0",
-      "resolved": "https://registry.npmjs.org/dependency-cruiser/-/dependency-cruiser-15.5.0.tgz",
-      "integrity": "sha512-f6pY7rh6IHl39pLHdA9CUg3LzbJRDPeZXGa1q0A4v7qTy3CDP8xOg0gsecFglurvsB6kuIYkUSW1PUtfyVkEOA==",
+      "version": "16.0.0-beta-4",
+      "resolved": "https://registry.npmjs.org/dependency-cruiser/-/dependency-cruiser-16.0.0-beta-4.tgz",
+      "integrity": "sha512-DLeWXLL86l7bJ9TwX9d2uyFhYwssTDWs8EQqHTXIbqZcxEIrdOeZvAu/6G0YK4OFN0JGldjmdMHwDgo6gj6eBA==",
       "dev": true,
       "dependencies": {
         "acorn": "8.11.2",
diff --git a/package.json b/package.json
index 8096246..94173c5 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "@types/node": "20.10.4",
     "c8": "8.0.1",
     "clean-pkg-json": "1.2.0",
-    "dependency-cruiser": "15.5.0",
+    "dependency-cruiser": "16.0.0-beta-4",
     "husky": "8.0.3",
     "lint-staged": "15.2.0",
     "prettier": "3.1.1",
diff --git a/src/codeowners/generate.test.ts b/src/codeowners/generate.test.ts
index e15de10..5aac1fb 100644
--- a/src/codeowners/generate.test.ts
+++ b/src/codeowners/generate.test.ts
@@ -7,7 +7,7 @@ import type { ITeamMap } from "../team-map/team-map.js";
 import { parse } from "../virtual-code-owners/parse.js";
 import readVirtualCodeOwners from "../virtual-code-owners/read.js";
 import generateCodeOwners from "./generate.js";
-import { IVirtualCodeOwnersCST } from "../virtual-code-owners/cst.js";
+import type { IVirtualCodeOwnersCST } from "../virtual-code-owners/cst.js";
 
 export function generateCodeOwnersFromString(
   pCodeOwnersFileAsString: string,
diff --git a/tools/dependency-cruiser-config/options.yml b/tools/dependency-cruiser-config/options.yml
index 3672068..bb2d61a 100644
--- a/tools/dependency-cruiser-config/options.yml
+++ b/tools/dependency-cruiser-config/options.yml
@@ -1,3 +1,4 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/sverweij/dependency-cruiser/main/src/schema/configuration.schema.json#/definitions/OptionsType
 doNotFollow:
   path: node_modules
 moduleSystems:
diff --git a/tools/dependency-cruiser-config/rules.yml b/tools/dependency-cruiser-config/rules.yml
index f92190c..ef1fb5c 100644
--- a/tools/dependency-cruiser-config/rules.yml
+++ b/tools/dependency-cruiser-config/rules.yml
@@ -1,3 +1,4 @@
+# yaml-language-server: $schema=this-is-not-a-prometheus-schema
 ---
 # rules from the 'recommended' preset:
 - name: no-circular
@@ -145,3 +146,29 @@
   to:
     dependencyTypes:
       - npm-peer
+- name: "no-tsconfig-basedir-use"
+  comment:
+    This module depends om something directly via a 'tsconfig.json' 'baseUrl' property.
+    This is discouraged, unless you're still doing AMD modules.
+    See https://www.typescriptlang.org/tsconfig#baseUrl"
+  severity: "error"
+  from: {}
+  to:
+    dependencyTypes:
+      - aliased-tsconfig-base-url
+- name: only-type-only-in-types
+  comment: This .d.ts depends on something via an import that is not 'type' only.
+  severity: error
+  from:
+    path: "[.]d[.][cm]?ts$"
+  to:
+    dependencyTypesNot:
+      - type-only
+- name: only-type-only-to-dts
+  comment: This module depends on a .d.ts file via an import that is not 'type' only.
+  severity: error
+  from: {}
+  to:
+    path: "[.]d[.][cm]?ts$"
+    dependencyTypesNot:
+      - type-only
diff --git a/tsconfig.json b/tsconfig.json
index 735d0e3..d4be9ab 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -28,7 +28,7 @@
     "module": "NodeNext" /* Specify what module code is generated. */,
     "rootDir": "./src/" /* Specify the root folder within your source files. */,
     "moduleResolution": "NodeNext" /* Specify how TypeScript looks up a file from a given module specifier. */,
-    "baseUrl": "./" /* Specify the base directory to resolve non-relative module names. */,
+    // "baseUrl": "./" /* Specify the base directory to resolve non-relative module names. */,
     // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
     // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
     // "typeRoots": [],                                  /* Specify multiple folders that act like './node_modules/@types'. */