diff --git a/docs/eps/week4.md b/docs/eps/week4.md
index 6f41eed7..62c2fd4f 100644
--- a/docs/eps/week4.md
+++ b/docs/eps/week4.md
@@ -2,7 +2,7 @@
 
 Week 4 is diving into the testing tools and practices necessary to keep the network secure. 
 
-Join the presentation by [Mario Vega](https://twitter.com/ralexstokes) on [Monday, March 11, 4PM UTC](https://savvytime.com/converter/utc-to-germany-berlin-united-kingdom-london-ny-new-york-city-ca-san-francisco-china-shanghai-japan-tokyo-australia-sydney/mar-11-2024/4pm). 
+Join the presentation by [Mario Vega](https://github.com/marioevz) on [Monday, March 11, 4PM UTC](https://savvytime.com/converter/utc-to-germany-berlin-united-kingdom-london-ny-new-york-city-ca-san-francisco-china-shanghai-japan-tokyo-australia-sydney/mar-11-2024/4pm).
 
 The link to stream will be provided here and announced in [Discord group](https://discord.gg/epfsg). 
 
@@ -11,22 +11,24 @@ The link to stream will be provided here and announced in [Discord group](https:
 Before starting with the week 4 content, make yourself familiar with resources in [week 3](/eps/week3.md). 
 
 Additionally, you can read get ready by reading following resources:
-- 
+
+- https://ethereum-tests.readthedocs.io/en/latest/
+- https://ethereum.github.io/execution-spec-tests
 
 ## Outline
 
-https://github.com/ethereum/tests
-https://github.com/ethereum/retesteth
-https://github.cosm/ethereum/execution-spec-tests
-https://github.com/lightclient/rpctestgen
-https://github.com/ethereum/hive
-https://github.com/marioevz/eth_tools
-https://github.com/kurtosis-tech/kurtosis
-https://github.com/MariusVanDerWijden/FuzzyVM
-https://github.com/MariusVanDerWijden/tx-fuzz
+- https://github.com/ethereum/execution-spec-tests
+- https://github.com/ethereum/hive
+- https://github.com/ethereum/tests
+- https://github.com/ethereum/retesteth
+- https://github.com/lightclient/rpctestgen
+- https://github.com/marioevz/eth_tools
+- https://github.com/kurtosis-tech/kurtosis
+- https://github.com/MariusVanDerWijden/FuzzyVM
+- https://github.com/MariusVanDerWijden/tx-fuzz
 
 ## Additional reading and exercises 
 
 - [Quest for the Best Tests, a Retrospective on #TestingTheMerge by Pari](https://archive.devcon.org/archive/watch/6/quest-for-the-best-tests-a-retrospective-on-testingthemerge/?tab=YouTube)
 - [Killing ETH - Finding Consensus Issues on Layer 1 by Marius](https://archive.devcon.org/archive/watch/6/killing-eth-finding-consensus-issues-on-layer-1/?tab=YouTube)
-- [Dencun testing](https://www.youtube.com/watch?v=88tZticGbTo)
\ No newline at end of file
+- [Dencun testing](https://www.youtube.com/watch?v=88tZticGbTo)