diff --git a/requirements.txt b/requirements.txt
index 6946d3b..fb4c20c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ psutil==5.0.0
 scikit-learn==0.18.1
 scipy==0.18.1
 sympy==1.0
-tensorflow==1.0.0
+tensorflow==2.5.3
 
 # Optional: OpenAI gym is only needed for the Reinforcement Learning chapter.
 # There are a few dependencies you need to install first, check out: