diff --git a/demo/api/requirements.txt b/demo/api/requirements.txt
index 5f26b9e..b45d5e8 100644
--- a/demo/api/requirements.txt
+++ b/demo/api/requirements.txt
@@ -23,7 +23,7 @@ scipy==1.2.1
 singledispatch==3.4.0.3
 six==1.12.0
 tensorboard==1.13.1
-tensorflow==1.13.1
+tensorflow==2.6.4
 tensorflow-estimator==1.13.0
 termcolor==1.1.0
 waitress==1.2.1