diff --git a/package.json b/package.json
index e054fd6b9a..4cf31b65b7 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@globalfishingwatch/maplibre-gl",
   "description": "BSD licensed community fork of mapbox-gl, a WebGL interactive maps library",
-  "version": "2.1.9-gfw.22",
+  "version": "2.1.9-gfw.23",
   "main": "dist/maplibre-gl.js",
   "style": "dist/maplibre-gl.css",
   "license": "BSD-3-Clause",
diff --git a/src/style/style.ts b/src/style/style.ts
index 82af00169d..16a92eb9fd 100644
--- a/src/style/style.ts
+++ b/src/style/style.ts
@@ -1262,7 +1262,7 @@ class Style extends Evented {
 
     _debouncedUpdateSource = debounce(
         (id: string, transform: Transform) => {
-            this.sourceCaches[id].update(transform);
+            this.sourceCaches[id]?.update(transform);
         },
         60, {leading: true}
     );