diff --git a/src/icons.ts b/src/icons.ts
index fc12b60f..5e21bdbb 100644
--- a/src/icons.ts
+++ b/src/icons.ts
@@ -1,6 +1,6 @@
 import { IconEntry, IconCategory, FigmaCategory } from "./types";
 
-export const icons: ReadonlyArray<IconEntry> = [
+export const icons = <const>[
   {
     name: "address-book",
     pascal_name: "AddressBook",
@@ -16806,4 +16806,4 @@ export const icons: ReadonlyArray<IconEntry> = [
     published_in: 1.0,
     updated_in: 1.0,
   },
-];
+] satisfies ReadonlyArray<IconEntry>;
diff --git a/src/types.ts b/src/types.ts
index aabf6a66..9d5f9634 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -56,9 +56,9 @@ export interface IconEntry {
     name: string;
     pascal_name: string;
   };
-  categories: IconCategory[];
+  categories: readonly IconCategory[];
   figma_category: FigmaCategory;
-  tags: string[];
+  tags: readonly string[];
   codepoint: number;
   published_in: number;
   updated_in: number;