diff --git a/README.md b/README.md
index 0664824..9f7c751 100644
--- a/README.md
+++ b/README.md
@@ -171,6 +171,6 @@ resolved by the SPA as before.
 
 ## Google Analytics
 
-`GOOGLE_ANALYTICS_TRACKING_ID` in `src/config.ts` is empty, which disables
-tracking. Set a GA4 measurement ID (`G-XXXXXXXXXX`) to enable it; the old
-Universal Analytics property was shut down in 2023.
+`GOOGLE_ANALYTICS_TRACKING_ID` in `src/config.ts` carries the GA4 measurement
+ID that replaced the Universal Analytics property shut down in 2023. Emptying
+it disables tracking.
diff --git a/src/config.ts b/src/config.ts
index de1297f..21396c1 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,8 +1,7 @@
 const SITE_TITLE = 'Visiome Platform';
 const SITE_SLOGAN = 'Digital archive for vision science';
-// GA4 measurement ID (G-XXXXXXXXXX); empty disables tracking.
-// The former Universal Analytics property (UA-2787276-1) was shut down in 2023.
-const GOOGLE_ANALYTICS_TRACKING_ID = '';
+// Replaces the Universal Analytics property (UA-2787276-1), shut down in 2023.
+const GOOGLE_ANALYTICS_TRACKING_ID = 'G-94PHTGFJ7S';
 const XOONIPS_ITEMTYPES = ['binder', 'model', 'data', 'stimulus', 'tool', 'presentation', 'paper', 'book', 'url'];
 const PICO_MODULES = ['manual_ja', 'primface'];