diff --git a/typings/internalBinding/config.d.ts b/typings/internalBinding/config.d.ts
index 7c93e34238915e..68c1002f413652 100644
--- a/typings/internalBinding/config.d.ts
+++ b/typings/internalBinding/config.d.ts
@@ -1,12 +1,15 @@
 export interface ConfigBinding {
   isDebugBuild: boolean;
+  openSSLIsBoringSSL: boolean;
   hasOpenSSL: boolean;
   fipsMode: boolean;
   hasIntl: boolean;
+  hasSmallICU: boolean;
   hasTracing: boolean;
   hasNodeOptions: boolean;
   hasInspector: boolean;
   noBrowserGlobals: boolean;
   bits: number;
   hasDtrace: boolean;
+  getDefaultLocale(): string;
 }
diff --git a/typings/internalBinding/os.d.ts b/typings/internalBinding/os.d.ts
index 91e907ef3c1205..afaf2e7b3b6b1b 100644
--- a/typings/internalBinding/os.d.ts
+++ b/typings/internalBinding/os.d.ts
@@ -22,4 +22,5 @@ export interface OSBinding {
   getPriority(pid: number, ctx: InternalOSBinding.OSContext): number | undefined;
   getOSInformation(ctx: InternalOSBinding.OSContext): [sysname: string, version: string, release: string];
   isBigEndian: boolean;
+  getAvailableParallelism(): number;
 }