diff --git a/_config.yml b/_config.yml
index c99b42f..3e924c3 100644
--- a/_config.yml
+++ b/_config.yml
@@ -6,27 +6,27 @@ theme: jekyll-theme-chirpy
 # The language of the webpage › http://www.lingoes.net/en/translator/langcode.htm
 # If it has the same name as one of the files in folder `_data/locales`, the layout language will also be changed,
 # otherwise, the layout language will use the default value of 'en'.
-lang: en
+lang: ko
 
 # Change to your timezone › https://kevinnovak.github.io/Time-Zone-Picker
-timezone:
+timezone: Asia/Seoul
 
 # jekyll-seo-tag settings › https://github.com/jekyll/jekyll-seo-tag/blob/master/docs/usage.md
 # ↓ --------------------------
 
-title: Chirpy # the main title
+title: 차차 Notes # the main title
 
-tagline: A text-focused Jekyll theme # it will display as the subtitle
+tagline: MLOps 개발일지 # it will display as the subtitle
 
 description: >- # used by seo meta and the atom feed
   A minimal, responsive and feature-rich Jekyll theme for technical writing.
 
 # Fill in the protocol & hostname for your site.
 # E.g. 'https://username.github.io', note that it does not end with a '/'.
-url: ""
+url: "https://sean9887.github.io"
 
 github:
-  username: github_username # change to your GitHub username
+  username: sean9887 # change to your GitHub username
 
 twitter:
   username: twitter_username # change to your Twitter username
@@ -34,12 +34,12 @@ twitter:
 social:
   # Change to your full name.
   # It will be displayed as the default author of the posts and the copyright owner in the Footer
-  name: your_full_name
-  email: example@domain.com # change to your email address
+  name: chhha
+  email: sean9887@naver.com # change to your email address
   links:
     # The first element serves as the copyright owner's link
-    - https://twitter.com/username # change to your Twitter homepage
-    - https://github.com/username # change to your GitHub homepage
+    # - https://twitter.com/username # change to your Twitter homepage
+    - https://github.com/sean9887 # change to your GitHub homepage
     # Uncomment below to add more social links
     # - https://www.facebook.com/username
     # - https://www.linkedin.com/in/username
@@ -98,7 +98,7 @@ theme_mode: # [light | dark]
 cdn:
 
 # the avatar on sidebar, support local or CORS resources
-avatar:
+avatar: assets/img/dev_squirrel.png
 
 # The URL of the site-wide social preview image used in SEO `og:image` meta tag.
 # It can be overridden by a customized `page.image` in front matter.
diff --git a/assets/img/dev_squirrel.png b/assets/img/dev_squirrel.png
new file mode 100644
index 0000000..4899988
Binary files /dev/null and b/assets/img/dev_squirrel.png differ