diff --git a/scripts/health-sync.tsx b/scripts/health-sync.tsx
index 7d4d4e9..23626cb 100644
--- a/scripts/health-sync.tsx
+++ b/scripts/health-sync.tsx
@@ -12,7 +12,7 @@
 //
 // Docs: https://scriptingapp.github.io/guide/Device%20Capabilities/Health/
 
-import { Script } from "scripting"
+import { Script, Notification } from "scripting"
 
 // Variables used by Scripting app. These must be at the very top of the file.
 // icon-color: deep-blue; icon-glyph: heart;
@@ -30,7 +30,7 @@ const U = {
 }
 
 // Read the most recent sample of a type. Returns { value, startDate } or null.
-async function readLatest(type: string, unit: HealthUnit): Promise<{ value: number; startDate: Date } | null> {
+async function readLatest(type: HealthQuantityType, unit: HealthUnit): Promise<{ value: number; startDate: Date } | null> {
   try {
     const samples = await Health.queryQuantitySamples(type, {
       limit: 1,
@@ -51,7 +51,7 @@ async function readLatest(type: string, unit: HealthUnit): Promise<{ value: numb
 }
 
 // Sum all samples of a type since midnight. Returns a number or null.
-async function readTodaySum(type: string, unit: HealthUnit): Promise<number | null> {
+async function readTodaySum(type: HealthQuantityType, unit: HealthUnit): Promise<number | null> {
   try {
     const start = new Date()
     start.setHours(0, 0, 0, 0)