diff --git a/02_Python_Programming/requirements.txt b/02_Python_Programming/requirements.txt
index 91274a2..12afb22 100644
--- a/02_Python_Programming/requirements.txt
+++ b/02_Python_Programming/requirements.txt
@@ -29,7 +29,7 @@ opt-einsum==3.2.0
 pandas==1.0.1
 pandas-datareader==0.8.1
 Pillow==7.0.0
-protobuf==3.11.3
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 PyMySQL==0.9.3