diff --git a/lang/include/ivy/lang/lex.h b/lang/include/ivy/lang/lex.h
index 531a33f..070bb41 100644
--- a/lang/include/ivy/lang/lex.h
+++ b/lang/include/ivy/lang/lex.h
@@ -109,6 +109,8 @@ enum ivy_symbol {
 	IVY_SYM_COMMA,
 	IVY_SYM_SEMICOLON,
 	IVY_SYM_DOLLAR,
+	IVY_SYM_DOUBLE_DOT,
+	IVY_SYM_DOUBLE_DOT_EQUAL,
 	IVY_SYM_HYPHEN_RIGHT_ANGLE,
 	IVY_SYM_EQUAL_RIGHT_ANGLE,
 	IVY_SYM_FORWARD_SLASH_ASTERISK,
diff --git a/lang/lex.c b/lang/lex.c
index 6745392..0ec3eaf 100644
--- a/lang/lex.c
+++ b/lang/lex.c
@@ -106,6 +106,9 @@ static struct lex_token_def symbols[] = {
 	LEX_TOKEN_DEF(IVY_SYM_COMMA, ","),
 	LEX_TOKEN_DEF(IVY_SYM_SEMICOLON, ";"),
 	LEX_TOKEN_DEF(IVY_SYM_DOLLAR, "$"),
+	LEX_TOKEN_DEF(IVY_SYM_DOUBLE_DOT, ".."),
+	LEX_TOKEN_DEF(IVY_SYM_DOUBLE_DOT_EQUAL, "..="),
+	LEX_TOKEN_DEF(IVY_SYM_DOLLAR, "$"),
 	LEX_TOKEN_DEF(IVY_SYM_HYPHEN_RIGHT_ANGLE, "->"),
 	LEX_TOKEN_DEF(IVY_SYM_EQUAL_RIGHT_ANGLE, "=>"),
 };
@@ -1304,6 +1307,8 @@ const char *ivy_symbol_to_string(enum ivy_symbol sym)
 		ENUM_STR(IVY_SYM_COMMA);
 		ENUM_STR(IVY_SYM_SEMICOLON);
 		ENUM_STR(IVY_SYM_DOLLAR);
+		ENUM_STR(IVY_SYM_DOUBLE_DOT);
+		ENUM_STR(IVY_SYM_DOUBLE_DOT_EQUAL);
 		ENUM_STR(IVY_SYM_HYPHEN_RIGHT_ANGLE);
 		ENUM_STR(IVY_SYM_EQUAL_RIGHT_ANGLE);
 		ENUM_STR(IVY_SYM_FORWARD_SLASH_ASTERISK);