diff --git a/_config.yml b/_config.yml
index 8052a4d..0df0907 100644
--- a/_config.yml
+++ b/_config.yml
@@ -26,8 +26,8 @@ navbar:
     menu:
         # Home: /
         Archives: /archives
-        サークル参加😺: https://techbookfest.org/event/tbf10#requirements
-        技術書典10 12/26-01/06: https://techbookfest.org/event/tbf10
+        サークル参加😺: https://techbookfest.org/event/tbf11#requirements
+        技術書典11（7/10-7/25）: https://techbookfest.org/event/tbf11
         # Categories: /categories
         # Tags: /tags
         # About: /about
@@ -125,7 +125,7 @@ widgets:
         # Title of the author to be shown in the profile widget
         author_title: 運営事務局
         # Author's current location to be shown in the profile widget
-        location: 12/26-01/06 オンライン
+        location: 7/10-7/25 オンライン
         # Path or URL to the avatar to be shown in the profile widget
         avatar: /css/images/tbf-icon.svg
         # Email address for the Gravatar to be shown in the profile widget
@@ -164,6 +164,7 @@ widgets:
         # Links to be shown in the links widget
         links:
             公式サイト: https://techbookfest.org/
+            技術書典11: https://techbookfest.org/event/tbf11
             技術書典10: https://techbookfest.org/event/tbf10
             技術書典9: https://techbookfest.org/event/tbf09
             技術書典8: https://techbookfest.org/event/tbf08
diff --git a/source/images/og_image.jpg b/source/images/og_image.jpg
index 3696d98..412a0c5 100644
Binary files a/source/images/og_image.jpg and b/source/images/og_image.jpg differ