diff --git a/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/Protobuf.xtext b/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/Protobuf.xtext
index a2e91e7..90e1061 100644
--- a/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/Protobuf.xtext
+++ b/com.google.eclipse.protobuf/src/com/google/eclipse/protobuf/Protobuf.xtext
@@ -60,7 +60,7 @@
 
 Group:
   modifier=Modifier 'group' name=Name '=' index=(LONG | HEX)
-  ('[' (fieldOptions+=FieldOption (',' fieldOptions+=FieldOption)*) ']')? '{'
+  ('[' (fieldOptions+=BoolOrValueFieldOption (',' fieldOptions+=BoolOrValueFieldOption)*) ']')? '{'
   elements+=GroupElement*
   '}' (';')?;
 
@@ -72,7 +72,7 @@
 
 MessageField:
   =>modifier=Modifier type=TypeLink name=Name '=' index=(LONG | HEX)
-  ('[' (fieldOptions+=FieldOption (',' fieldOptions+=FieldOption)*)? ']')? (';')+;
+  ('[' (fieldOptions+=BoolOrValueFieldOption (',' fieldOptions+=BoolOrValueFieldOption)*)? ']')? (';')+;
 
 enum Modifier:
   required | optional | repeated;
@@ -100,7 +100,7 @@
 
 Literal:
   name=Name '=' index=(LONG | HEX) 
-  ('[' fieldOptions+=FieldOption (',' fieldOptions+=FieldOption)* ']')? (';')+;
+  ('[' fieldOptions+=BoolOrValueFieldOption (',' fieldOptions+=BoolOrValueFieldOption)* ']')? (';')+;
 
 terminal HEX returns ecore::ELong:
   ('-')? '0x' (NUMBER | 'a'..'f' | 'A'..'F')+;
@@ -156,7 +156,10 @@
 CustomOption:
   'option' '(' source=OptionSource ')'
   ('.' fields+=OptionField ('.' fields+=OptionField)*)? '=' value=Value (';')+;
- 
+
+BoolOrValueFieldOption:
+  FieldOption | DeprecatedFieldOption | PackedFieldOption;
+  
 FieldOption:
   DefaultValueFieldOption | NativeFieldOption | CustomFieldOption;
 
@@ -170,6 +173,12 @@
   '(' source=OptionSource ')'
   ('.' fields+=OptionField ('.' fields+=OptionField)*)? '=' value=Value;
 
+DeprecatedFieldOption:
+  'deprecated' '=' value=BOOL;
+
+PackedFieldOption:
+  'packed' '=' value=BOOL;
+
 OptionSource:
   target=[IndexedElement|QualifiedName];