diff --git a/syntax/gf.vim b/syntax/gf.vim
index d0484c0..d7af264 100644
--- a/syntax/gf.vim
+++ b/syntax/gf.vim
@@ -9,10 +9,12 @@ endif
 
 " Keywords
 syn keyword gfStructural abstract concrete resource interface instance
-syn keyword gfStructural incomplete of with open
+syn keyword gfStructural incomplete of with open in
 syn keyword gfStructural cat fun lincat lin oper flags
+syn keyword gfStructural def data lindef printname param
+syn keyword gfType       Str Type PType
 syn match   gfStructural "\*\*\|-"
-syn keyword gfConditional case table overload
+syn keyword gfConditional case table overload variants let where pre
 
 " language
 syn match   gfFunction  "[[:alpha:]][[:alnum:]_]*"
@@ -39,4 +41,5 @@ hi def link gfSpecialChar   SpecialChar
 hi def link gfDelimiter     Delimiter
 hi def link gfSymbols       Operator
 hi def link gfOperators     Operator
+hi def link gfType          Type