diff --git a/readme.md b/readme.md
index 18539ef..31ccffc 100644
--- a/readme.md
+++ b/readme.md
@@ -11,7 +11,7 @@
 
 - [ ] SDF
     - [ ] Basic Shape Rendering
-        - [ ] Sphere
+        - [x] Sphere
         - [ ] Box
         - [ ] Inf Cylinder
         - [ ] Capsule