diff --git a/package-lock.json b/package-lock.json
index 6b8e260..cf14c4d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -58,9 +58,9 @@
       "dev": true
     },
     "@sourcegraph/tsconfig": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/@sourcegraph/tsconfig/-/tsconfig-3.0.0.tgz",
-      "integrity": "sha512-/2Q4lAQvHPGkddV7+4FRBgJPIzWw0e364kYq3IkD22H9eHJdA0KHfKXAKmWQjbtVpWSQeNPyVJ1pT5emfef4TQ==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@sourcegraph/tsconfig/-/tsconfig-4.0.0.tgz",
+      "integrity": "sha512-jxrhKbek4yu1HUDpUhqR9hAGFiUgaJ9NIM+c8JEkAnvpW67ab1AUFWb82aSVfZWX1UVqfR84AMr7xP3E8LlL+A==",
       "dev": true
     },
     "@sourcegraph/tslint-config": {
diff --git a/package.json b/package.json
index 4bfebbc..444650d 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   },
   "devDependencies": {
     "@sourcegraph/prettierrc": "^2.2.0",
-    "@sourcegraph/tsconfig": "^3.0.0",
+    "@sourcegraph/tsconfig": "^4.0.0",
     "@sourcegraph/tslint-config": "^12.3.1",
     "@types/express": "4.16.1",
     "@types/morgan": "1.7.35",