diff --git a/ch01/requirements_gpu.txt b/ch01/requirements_gpu.txt
index ebcf3ab..0baec06 100644
--- a/ch01/requirements_gpu.txt
+++ b/ch01/requirements_gpu.txt
@@ -1,3 +1,3 @@
 keras==2.1.6
-tensorflow-gpu==1.8.0
+tensorflow-gpu==2.9.3
 h5py==2.7.1