diff --git a/riotbuild/requirements.txt b/riotbuild/requirements.txt
index bf74886c..5f087e1b 100644
--- a/riotbuild/requirements.txt
+++ b/riotbuild/requirements.txt
@@ -19,7 +19,7 @@ pyasn1==0.4.2
 pycryptodome==3.11.0
 
 ## pkg/NanoPb
-protobuf==3.18.3
+protobuf==5.29.6
 
 ## pkg/emlearn
 emlearn==0.17.1