diff --git a/batch_processing/requirements.txt b/batch_processing/requirements.txt
index abae6e1..0e1bb06 100644
--- a/batch_processing/requirements.txt
+++ b/batch_processing/requirements.txt
@@ -33,7 +33,7 @@ packaging==20.4
 pathspec==0.8.0
 pexpect==4.8.0
 phonemizer==2.2
-protobuf==3.12.2
+protobuf==3.18.3
 ptyprocess==0.6.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8