diff --git a/platform/CMSIS/NN/Tests/UnitTest/requirements.txt b/platform/CMSIS/NN/Tests/UnitTest/requirements.txt
index 4b8e2a5ccc..bcf56eb674 100644
--- a/platform/CMSIS/NN/Tests/UnitTest/requirements.txt
+++ b/platform/CMSIS/NN/Tests/UnitTest/requirements.txt
@@ -48,7 +48,7 @@ oauthlib==3.1.0
 opt-einsum==3.3.0
 packaging==20.9
 prettytable==0.7.2
-protobuf==3.5.2.post1
+protobuf==5.29.6
 psutil==5.6.6
 pyasn1==0.2.3
 pyasn1-modules==0.2.8