diff --git a/README.md b/README.md
index 29c7615..ee54072 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Essential
 - [x] Cascading shadow maps
 - [x] Tone map shader
 - [x] Poisson soft shadowing
-- [ ] Frustum culling
+- [x] Frustum culling
 - [x] Shadow-casting point lights
 - [ ] Parabolic lights
 - [x] Skyboxes