diff --git a/src/Parser/Lexer.x b/src/Parser/Lexer.x
index d7f551d..ef76773 100644
--- a/src/Parser/Lexer.x
+++ b/src/Parser/Lexer.x
@@ -118,6 +118,8 @@ tokens :-
     "<<=" { \_ -> SHIFTLEFTEQUAL }
     ">>" { \_ -> SHIFTRIGHT }
     ">>=" { \_ -> SHIFTRIGHTEQUAL }
+    ">>>" { \_ -> UNSIGNEDSHIFTRIGHT }
+    ">>>=" { \_ -> UNSIGNEDSHIFTRIGHTEQUAL }
 
 
 {
@@ -173,7 +175,7 @@ data Token
     | VOLATILE
     | WHILE
     | IDENTIFIER String
-    | INTEGERLITERAL Integer
+    | INTEGERLITERAL Int
     | CHARLITERAL Char
     | BOOLLITERAL Bool
     | NULLLITERAL
@@ -219,6 +221,8 @@ data Token
     | SHIFTLEFTEQUAL
     | SHIFTRIGHT
     | SHIFTRIGHTEQUAL
+    | UNSIGNEDSHIFTRIGHT
+    | UNSIGNEDSHIFTRIGHTEQUAL
     deriving(Eq,Show)
 
 }
\ No newline at end of file