diff --git a/syntax/ats.vim b/syntax/ats.vim
index 3736625..7f213c1 100644
--- a/syntax/ats.vim
+++ b/syntax/ats.vim
@@ -54,6 +54,11 @@ syn match atsComment "\v\/\/.*$" contains=atsTodo,@Spell
 syn region atsNestComment start="/\*" end="\*/" contains=atsNestComment,atsTodo,@Spell
 syn region atsNestParenComment start="(\*" end="\*)" contains=atsTodo,@Spell,atsNestParenComment
 
+syntax match atsType 'absvt@ype'
+syntax match atsType 'vt@ype'
+syntax match atsType 'abst@ype'
+syntax match atsType 't@ype'
+
 syntax match logicalAnd '&&' conceal cchar=∧
 syntax match leq '<=' conceal cchar=≤
 syntax match geq '>=' conceal cchar=≥