diff --git a/.gitmodules b/.gitmodules
index 8f9f5e8..f7e4603 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "modules/polyfill"]
 	path = modules/polyfill
 	url = git@github.com:SimonCropp/Polyfill.git
-	branch = 8.9.1
+	branch = 9.0.1
diff --git a/modules/polyfill b/modules/polyfill
index 84844f3..9589273 160000
--- a/modules/polyfill
+++ b/modules/polyfill
@@ -1 +1 @@
-Subproject commit 84844f3e2620492f63aa2e6c86c96b72c7379a67
+Subproject commit 9589273eb3fc0f911a9880bdfad400882b8a276b