diff --git a/uniffi_bindgen/src/bindings/kotlin/templates/ObjectCleanerHelperAndroid.kt b/uniffi_bindgen/src/bindings/kotlin/templates/ObjectCleanerHelperAndroid.kt
index 2513a6a29e..d025879848 100644
--- a/uniffi_bindgen/src/bindings/kotlin/templates/ObjectCleanerHelperAndroid.kt
+++ b/uniffi_bindgen/src/bindings/kotlin/templates/ObjectCleanerHelperAndroid.kt
@@ -2,14 +2,15 @@
 {{- self.add_import("androidx.annotation.RequiresApi") }}
 
 private fun UniffiCleaner.Companion.create(): UniffiCleaner =
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
         AndroidSystemCleaner()
     } else {
         UniffiJnaCleaner()
     }
 
 // The SystemCleaner, available from API Level 33.
-@RequiresApi(Build.VERSION_CODES.TIRAMISU)
+// Some API Level 33 OSes do not support using it, so we require API Level 34.
+@RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
 private class AndroidSystemCleaner : UniffiCleaner {
     val cleaner = android.system.SystemCleaner.cleaner()
 
@@ -17,7 +18,7 @@ private class AndroidSystemCleaner : UniffiCleaner {
         AndroidSystemCleanable(cleaner.register(value, cleanUpTask))
 }
 
-@RequiresApi(Build.VERSION_CODES.TIRAMISU)
+@RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
 private class AndroidSystemCleanable(
     private val cleanable: java.lang.ref.Cleaner.Cleanable,
 ) : UniffiCleaner.Cleanable {