diff --git a/docs/readthedocs/source/doc/Chronos/Overview/chronos.md b/docs/readthedocs/source/doc/Chronos/Overview/chronos.md
index 0f024992..481e2293 100644
--- a/docs/readthedocs/source/doc/Chronos/Overview/chronos.md
+++ b/docs/readthedocs/source/doc/Chronos/Overview/chronos.md
@@ -36,7 +36,7 @@ pip install bigdl-nano[tensorflow]
 pip install pmdarima==1.8.2
 pip install prophet==1.0.1
 pip install neural-compressor==1.8.1
-pip install pyarrow=6.0.1
+pip install pyarrow==6.0.1
 ```
 ```eval_rst
 .. note::