diff --git a/_config.yml b/_config.yml
index 6187d241..d14a7c00 100644
--- a/_config.yml
+++ b/_config.yml
@@ -114,16 +114,9 @@ plugins:     ./_plugins
 future:      true
 lsi:         false
 pygments:    false
-markdown:    maruku
+markdown:    kramdown
 permalink:   date
 
-maruku:
-  use_tex:    false
-  use_divs:   false
-  png_engine: blahtex
-  png_dir:    images/latex
-  png_url:    /images/latex
-
 rdiscount:
   extensions: []
 
@@ -131,7 +124,7 @@ kramdown:
   auto_ids: true,
   footnote_nr: 1
   entity_output: as_char
-  toc_levels: 1..6
+  toc_levels: 2..6
   use_coderay: false
 
   coderay: