diff --git a/image_effects.install b/image_effects.install
index 6bb46e0..9628638 100644
--- a/image_effects.install
+++ b/image_effects.install
@@ -74,5 +74,12 @@ function image_effects_update_8003() {
 }
 
 /**
+ * Clear caches to discover newly added image effects.
+ */
+function image_effects_update_8004() {
+  // Empty update to cause a cache rebuild.
+}
+
+/**
  * @} End of "addtogroup updates-8.x-1.0-alpha".
  */