diff --git a/problem-sets-competitive-programming.md b/problem-sets-competitive-programming.md
index d5b8ab31484f66e2e44aedcf2486c236a7691f25..366e29b3d1c5da6fc0f502a3e77d3983c3ca2aab 100644
--- a/problem-sets-competitive-programming.md
+++ b/problem-sets-competitive-programming.md
@@ -23,6 +23,8 @@
 * [Coderbyte](https://coderbyte.com)
 * [Codewars](http://www.codewars.com)
 * [Codingame](https://www.codingame.com/start)
+* [COCI](https://hsin.hr/coci/)
+* [E-olymp](https://www.e-olymp.com/en/)
 * [Facebook Hackercup](https://www.facebook.com/hackercup)
 * [Google Code Jam](https://codingcompetitions.withgoogle.com/codejam)
 * [HackerEarth](https://www.hackerearth.com)
@@ -69,6 +71,7 @@
 * [Codeforces](http://codeforces.com/problemset)
 * [Codility](https://codility.com/programmers/)
 * [Coding Bat](http://codingbat.com/java)
+* [CSES Problem Set](https://cses.fi/problemset/)
 * [Exercism](http://exercism.io)
 * [Geeks For Geeks](http://www.geeksforgeeks.org)
 * [Google Code Jam - Practise](https://code.google.com/codejam/contests.html)