diff --git a/_docker/copy/install/Gemfile b/_docker/copy/install/Gemfile
index 369cbe6..5633f3f 100644
--- a/_docker/copy/install/Gemfile
+++ b/_docker/copy/install/Gemfile
@@ -7,9 +7,10 @@ gem 'concurrent-ruby', '1.3.4'
 gem 'citeproc', '1.0.10'
 gem 'rexml', '3.3.9'
 gem 'ffi', '1.17.0'
-gem 'http_parser.rb', '0.8.0'
-gem 'listen', '3.9.0'
-gem 'latex-decode', '0.4.0'
+gem 'http_parser.rb', '0.8.1'
+gem 'listen', '3.10.0'
+gem 'latex-decode', '0.4.2'
+gem 'logger', '1.7.0'
 
 group :jekyll_plugins do
   gem 'jekyll-paginate'
diff --git a/_members/yixuany.md b/_members/yixuany.md
index a2a572e..78c4cba 100644
--- a/_members/yixuany.md
+++ b/_members/yixuany.md
@@ -4,8 +4,8 @@ kerberos: yixuany
 name: Yixuan (Lucas) Jia
 office: 31-234B
 portrait: /images/members/yixuany.jpg
-position: Master
-title: Master's Candidate
+position: PhD
+title: PhD Candidate
 
 education:
 - type: B.S.