diff --git a/bsn_sdk/requirements.txt b/bsn_sdk/requirements.txt
index efa4ef7..f635504 100644
--- a/bsn_sdk/requirements.txt
+++ b/bsn_sdk/requirements.txt
@@ -9,7 +9,7 @@ grpcio==1.26.0
 hkdf==0.0.3
 idna==2.8
 lark-parser==0.7.1
-protobuf==3.11.2
+protobuf==3.18.3
 pycparser==2.19
 pycryptodomex==3.9.4
 pysha3==1.0b1
diff --git a/requirements.txt b/requirements.txt
index efa4ef7..f635504 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ grpcio==1.26.0
 hkdf==0.0.3
 idna==2.8
 lark-parser==0.7.1
-protobuf==3.11.2
+protobuf==3.18.3
 pycparser==2.19
 pycryptodomex==3.9.4
 pysha3==1.0b1