diff --git a/Gemfile.lock b/Gemfile.lock
index 2045573..1da3659 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -234,7 +234,7 @@ GEM
     thread_safe (0.3.6)
     typhoeus (1.3.1)
       ethon (>= 0.9.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     unicode-display_width (1.4.1)
 
@@ -245,7 +245,7 @@ DEPENDENCIES
   github-pages
   jekyll (~> 3.7.3)
   jekyll-feed (~> 0.6)
-  jekyll-theme-cayman
+  jekyll-theme-leap-day
   jemoji
 
 BUNDLED WITH