diff --git a/DSR Lecture notebooks/Module 06 - Reinforcement Learning - Adam/practical/q_learning/requirements.txt b/DSR Lecture notebooks/Module 06 - Reinforcement Learning - Adam/practical/q_learning/requirements.txt
index a2934a2a..fb00dcc6 100644
--- a/DSR Lecture notebooks/Module 06 - Reinforcement Learning - Adam/practical/q_learning/requirements.txt	
+++ b/DSR Lecture notebooks/Module 06 - Reinforcement Learning - Adam/practical/q_learning/requirements.txt	
@@ -33,7 +33,7 @@ pexpect==4.3.1
 pickleshare==0.7.4
 pluggy==0.6.0
 prompt-toolkit==1.0.15
-protobuf==3.5.1
+protobuf==3.15.0
 ptyprocess==0.5.2
 py==1.5.2
 pyglet==1.3.0