diff --git a/parser/parser.lex b/parser/parser.lex
index ba8fca6..781609f 100644
--- a/parser/parser.lex
+++ b/parser/parser.lex
@@ -25,6 +25,8 @@
 \]                  return RBRACKET;
 \(                  return LPAREN;
 \)                  return RPAREN;
+\<                  return LESS;
+\>                  return GREATER;
 
 0b[01]+             return BIN_NUMBER;
 0x[0-9A-Fa-f]+      return HEX_NUMBER;
diff --git a/parser/parser.yy b/parser/parser.yy
index b552b24..f4a9fa1 100644
--- a/parser/parser.yy
+++ b/parser/parser.yy
@@ -43,6 +43,8 @@ int yywrap()
 %token RBRACKET;
 %token LPAREN;
 %token RPAREN;
+%token LESS;
+%token GREATER;
 
 %token BIN_NUMBER;
 %token HEX_NUMBER;