diff --git a/package.json b/package.json
index d5e7a43..2d4b24d 100644
--- a/package.json
+++ b/package.json
@@ -41,6 +41,6 @@
     "rimraf": "^5.0.0",
     "rollup": "^2.10.9",
     "rollup-plugin-copy": "^3.3.0",
-    "typescript": "^3.9.3"
+    "typescript": "^5.0.0"
   }
 }
diff --git a/src/electron-app/components/nightscout-api.ts b/src/electron-app/components/nightscout-api.ts
index 6155833..8e5e779 100644
--- a/src/electron-app/components/nightscout-api.ts
+++ b/src/electron-app/components/nightscout-api.ts
@@ -49,7 +49,7 @@ export default class NightscoutAPI {
 
 export interface GlucoseStatus {
   success: boolean;
-  value: Number;
+  value: number;
   unit?: Unit;
-  timestamp: Number;
+  timestamp: number;
 }
diff --git a/yarn.lock b/yarn.lock
index 281fca3..74cfc90 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3690,10 +3690,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^3.9.3:
-  version "3.9.10"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.10.tgz#70f3910ac7a51ed6bef79da7800690b19bf778b8"
-  integrity sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==
+typescript@^5.0.0:
+  version "5.3.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.3.3.tgz#b3ce6ba258e72e6305ba66f5c9b452aaee3ffe37"
+  integrity sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==
 
 unbzip2-stream@^1.0.9:
   version "1.4.3"