diff --git a/_config.yml b/_config.yml
index 155e553..d655ccc 100644
--- a/_config.yml
+++ b/_config.yml
@@ -3,8 +3,8 @@ menu:
   # Blog: .
   Archives: archives
   # Official: https://techbookfest.org/
-  サークル参加😺: https://techbookfest.org/event/tbf03#requirements
-  技術書典3 10/22: https://techbookfest.org/event/tbf03
+  サークル参加😺: https://techbookfest.org/event/tbf04#requirements
+  技術書典4 4/22: https://techbookfest.org/event/tbf04
   # Categories: categories
   # Tags: tags
   # About: about
@@ -22,7 +22,7 @@ customize:
         gravatar: # Gravatar email address, if you enable Gravatar, your avatar config will be overriden
         author: 技術書典
         author_title: 技術書のお祭り！
-        location: 10/22 秋葉原UDX 2F アキバ・スクエア
+        location: 4/22 秋葉原UDX 2F アキバ・スクエア
         follow: https://twitter.com/techbookfest/
     highlight: monokai
     sidebar: right # sidebar position, options: left, right or leave it empty
@@ -89,6 +89,7 @@ miscellaneous:
         google_plus:
     links:
         公式サイト: https://techbookfest.org/
+        技術書典4: https://techbookfest.org/event/tbf04
         技術書典3: https://techbookfest.org/event/tbf03
         超技術書典: https://techbookfest.org/event/cho01
         技術書典2: https://techbookfest.org/event/tbf02