diff --git a/slides/index.yaml b/slides/index.yaml
index f180cd51..4c69e4b6 100644
--- a/slides/index.yaml
+++ b/slides/index.yaml
@@ -24,7 +24,7 @@
   lang: fr
   attend: https://enix.io/fr/services/formation/deployer-ses-applications-avec-kubernetes/
 
-- date: 2019-27-08
+- date: 2019-08-27
   country: tr
   city: Izmir
   event: HacknBreak
@@ -33,7 +33,7 @@
   lang: tr
   attend: https://hacknbreak.com
 
-- date: 2019-26-08
+- date: 2019-08-26
   country: tr
   city: Izmir
   event: HacknBreak
@@ -42,7 +42,7 @@
   lang: tr
   attend: https://hacknbreak.com
 
-- date: 2019-25-08
+- date: 2019-08-25
   country: tr
   city: Izmir
   event: HackBreak