diff --git a/index.html b/index.html
index 45cfd45..066ea3d 100644
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+++ b/index.html
@@ -40,7 +40,7 @@ features one tool, the SourceGen disassembler.</p>
   that are always/never taken, accurate cycle count listings, and correct
   analysis of 65816 code with variable-width registers.</li>
   <li>Easy generation of assembly source code in popular formats (currently
-  cc65 and Merlin 32).  Cross-assemblers can be invoked from the GUI to
+  cc65, 64tass, and Merlin 32).  Cross-assemblers can be invoked from the GUI to
   verify correctness.</li>
   <li>Symbols and constants are provided for ROM and operating system entry
   points on several popular systems.</li>