diff --git a/src/common/utils/composable-responsibilities/discriminable/discriminable.ts b/src/common/utils/composable-responsibilities/discriminable/discriminable.ts
index 9ca1cdbb5b..7976004ee6 100644
--- a/src/common/utils/composable-responsibilities/discriminable/discriminable.ts
+++ b/src/common/utils/composable-responsibilities/discriminable/discriminable.ts
@@ -4,7 +4,7 @@
  */
 
 // See: https://www.typescriptlang.org/docs/handbook/2/narrowing.html#discriminated-unions
-export interface Discriminable<T extends string> { kind: T }
+export interface Discriminable<T extends string> { readonly kind: T }
 
 // Note: this will fail at transpilation time, if all kinds are not instructed in switch/case.
 // See: https://www.typescriptlang.org/docs/handbook/2/narrowing.html#exhaustiveness-checking
diff --git a/src/common/utils/composable-responsibilities/labelable/labelable.ts b/src/common/utils/composable-responsibilities/labelable/labelable.ts
index 47ab292432..e0f2d98c21 100644
--- a/src/common/utils/composable-responsibilities/labelable/labelable.ts
+++ b/src/common/utils/composable-responsibilities/labelable/labelable.ts
@@ -3,5 +3,5 @@
  * Licensed under MIT License. See LICENSE in root directory for more information.
  */
 export interface Labelable {
-  label: string;
+  readonly label: string;
 }
diff --git a/src/common/utils/composable-responsibilities/orderable/orderable.ts b/src/common/utils/composable-responsibilities/orderable/orderable.ts
index 5f402660b7..f65518959c 100644
--- a/src/common/utils/composable-responsibilities/orderable/orderable.ts
+++ b/src/common/utils/composable-responsibilities/orderable/orderable.ts
@@ -6,7 +6,7 @@
 import { sortBy } from "lodash/fp";
 
 export interface Orderable {
-  orderNumber: number;
+  readonly orderNumber: number;
 }
 
 export const orderByOrderNumber = <T extends Orderable | {}>(maybeOrderables: T[]) =>
diff --git a/src/common/utils/composable-responsibilities/showable/showable.ts b/src/common/utils/composable-responsibilities/showable/showable.ts
index 0aacf417ad..43ec9f0fe7 100644
--- a/src/common/utils/composable-responsibilities/showable/showable.ts
+++ b/src/common/utils/composable-responsibilities/showable/showable.ts
@@ -7,7 +7,7 @@ import type { IComputedValue } from "mobx";
 import { isBoolean } from "../../type-narrowing";
 
 export interface Showable {
-  isShown: IComputedValue<boolean> | boolean;
+  readonly isShown: IComputedValue<boolean> | boolean;
 }
 
 export type MaybeShowable = Partial<Showable>;