diff --git a/src/cli/plugins-command-helpers.ts b/src/cli/plugins-command-helpers.ts
index 390798dc0db..64747fdcfe9 100644
--- a/src/cli/plugins-command-helpers.ts
+++ b/src/cli/plugins-command-helpers.ts
@@ -25,7 +25,7 @@ type SlotSelectionPlugin = {
 };
 
 type SlotSelectionRegistry = {
-  plugins: readonly SlotSelectionPlugin[];
+  plugins: SlotSelectionPlugin[];
 };
 
 function mergeRuntimeKinds(