diff --git a/README.md b/README.md
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@@ -84,11 +84,3 @@ You can try a calculator in __version 0.17~0.19__ !
 # Abstract Syntax Tree
 
 In __version 1.2__ the ast has been completed.
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-# Balloon script
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-[Balloon](https://github.com/ValKmjolnir/Balloon-script) is created for experiment.
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-It is a subset of Nasal and the parser is __stricter__ than Nasal parser.
-
-Explore the usage of balloon and enjoy yourself! XD