diff --git a/ch01/requirements.txt b/ch01/requirements.txt
index 55fe9a9..7d7bbc7 100644
--- a/ch01/requirements.txt
+++ b/ch01/requirements.txt
@@ -1,3 +1,3 @@
 keras==2.1.6
-tensorflow==1.8.0
+tensorflow==2.9.3
 h5py==2.7.1