diff --git a/syntax/eo.vim b/syntax/eo.vim
index f3402fa..c7fa388 100644
--- a/syntax/eo.vim
+++ b/syntax/eo.vim
@@ -23,7 +23,7 @@ syn keyword    eoStatements return
 
 " syn match      className               "\(\w\+\.\)\+\w\+"
 
-syn match      attributes              "@\(inout\|out\|in\|class\|free\|constructor\|extern\|protected\|const\|nonull\|warn_unused\|private\)"
+syn match      attributes              "@\(inout\|out\|in\|class\|free\|constructor\|extern\|protected\|const\|optional\|nullable\|warn_unused\|private\)"
 
 syn match eoLabelMatch   "\w\+:" contains=eoClassBodyLabels
 syn match eoBlockOpener  "\w\+\s*{" contains=eoClassBodyBlockOpener,eoInnerBlockOpener
@@ -67,6 +67,11 @@ syn region eoEventsRegion start="events\s*{" end="}" transparent
 syn match eoEvents "^\s*[^;: ]\+\(;\|:\|\s\)" contained containedin=eoEventsRegion contains=eoEvent
 syn match eoEvent "[^;: ]\+" contained
 
+" Implements region
+"syn region eoImplementsRegion start="\<implements\_s*{" end="}" transparent
+"syn match eoImplements "\w\+" contained containedin=eoImplementsRegion
+
+hi def link eoImplements Todo
 hi def link eoEvent Identifier
 hi def link eoClassBodyLabels Label
 hi def link eoClassBodyBlockOpener Label