diff --git a/src/material/tsconfig.json b/src/material/tsconfig.json
index 900477f6952e..651a5124ec97 100644
--- a/src/material/tsconfig.json
+++ b/src/material/tsconfig.json
@@ -2,7 +2,7 @@
 {
   "extends": "../../tsconfig.json",
   "compilerOptions": {
-    "rootDir": "..",
+    "rootDirs": ["..", "../../tools"],
     "baseUrl": ".",
     "paths": {
       "@angular/cdk": ["../cdk"],