diff --git a/src/constants/assets.ts b/src/constants/assets.ts
index b33a151..95a627a 100644
--- a/src/constants/assets.ts
+++ b/src/constants/assets.ts
@@ -57,4 +57,4 @@ export const ASSETS = {
     MOLE_WALK_DOWN: 'mole-walk-down',
     MONSTER_DEATH: 'monster-death',
   },
-};
+} as const;
diff --git a/src/constants/events.ts b/src/constants/events.ts
index 702406d..c356bc6 100644
--- a/src/constants/events.ts
+++ b/src/constants/events.ts
@@ -1,3 +1,3 @@
 export const EVENTS = {
   UPDATE_HP: 'update-hp',
-};
+} as const;
diff --git a/src/constants/map-content-keys.ts b/src/constants/map-content-keys.ts
index 6732a27..8759d1b 100644
--- a/src/constants/map-content-keys.ts
+++ b/src/constants/map-content-keys.ts
@@ -9,4 +9,4 @@ export const MAP_CONTENT_KEYS = {
     MONSTERS: 'monsters',
     ZONES: 'zones',
   },
-};
+} as const;
diff --git a/src/constants/maps.ts b/src/constants/maps.ts
index 23f84d7..8bcfa6c 100644
--- a/src/constants/maps.ts
+++ b/src/constants/maps.ts
@@ -7,4 +7,4 @@ export const MAPS = {
     file: 'second-map.json',
     key: 'second-level',
   },
-};
+} as const;
diff --git a/src/constants/monsters.ts b/src/constants/monsters.ts
index 514c35f..79f6a0f 100644
--- a/src/constants/monsters.ts
+++ b/src/constants/monsters.ts
@@ -1,4 +1,4 @@
 export const MONSTERS = {
   mole: 'mole',
   treant: 'treant',
-};
+} as const;
diff --git a/src/constants/registry.ts b/src/constants/registry.ts
index d706d05..8eab8c7 100644
--- a/src/constants/registry.ts
+++ b/src/constants/registry.ts
@@ -2,4 +2,4 @@ export const REGISTRY_KEYS = {
   PLAYER: {
     HP: 'playerHp',
   },
-};
+} as const;
diff --git a/src/constants/scenes.ts b/src/constants/scenes.ts
index 4297da6..fa40fb1 100644
--- a/src/constants/scenes.ts
+++ b/src/constants/scenes.ts
@@ -3,4 +3,4 @@ export const SCENES = {
   HUD: 'Hud',
   FIRST_LEVEL: 'FirstLevel',
   SECOND_LEVEL: 'SecondLevel',
-};
+} as const;