diff --git a/README.md b/README.md
index e71f28e..52e4a05 100644
--- a/README.md
+++ b/README.md
@@ -192,7 +192,7 @@
     - - [ ] Interview Questions
 
 ### Advanced concepts apart from interviews 
-- [ ] Fast IO
+- [x] Fast IO
 - [x] File handling
 - [ ] Bitwise + DP
 - [ ] Extended Euclidean algorithm