diff --git a/more/problem-sets-competitive-programming.md b/more/problem-sets-competitive-programming.md
index 48d47b1a9..122c5d86d 100644
--- a/more/problem-sets-competitive-programming.md
+++ b/more/problem-sets-competitive-programming.md
@@ -46,6 +46,7 @@
 * [Microcorruption](https://microcorruption.com/login)
 * [Newton School](https://my.newtonschool.co/contest/all)
 * [oj.uz](https://oj.uz)
+* [Sigmageek](https://sigmageek.com)
 * [Sphere Online Judge](http://www.spoj.com/contests)
 * [Striver’s CP Sheet](https://takeuforward.org/interview-experience/strivers-cp-sheet/)
 * [Techgig](https://www.techgig.com)