diff --git a/src/token.rs b/src/token.rs
index fef81ac8..3a27c4cf 100644
--- a/src/token.rs
+++ b/src/token.rs
@@ -525,8 +525,8 @@ impl Token {
             "===" | "!==" | "->" | "<-" | "=>" | ":=" | "::<" | "(*" | "*)" | "#" | "public"
             | "new" | "use" | "module" | "package" | "var" | "static" | "shared" | "with"
             | "do" | "each" | "then" | "goto" | "exit" | "switch" | "match" | "case"
-            | "default" | "void" | "null" | "nil" | "spawn" | "go" | "sync" | "async" | "await"
-            | "yield" => Reserved(syntax.into()),
+            | "default" | "void" | "null" | "nil" | "spawn" | "thread" | "go" | "sync"
+            | "async" | "await" | "yield" => Reserved(syntax.into()),
 
             KEYWORD_PRINT | KEYWORD_DEBUG | KEYWORD_TYPE_OF | KEYWORD_EVAL | KEYWORD_FN_PTR
             | KEYWORD_FN_PTR_CALL | KEYWORD_FN_PTR_CURRY | KEYWORD_IS_DEF_VAR