diff --git a/requirements.txt b/requirements.txt
index 051f720..0b71529 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ pep517==0.8.2
 Pillow==8.1.2
 pooch==1.3.0
 progress==1.5
-protobuf==3.15.6
+protobuf==3.18.3
 pycparser==2.20
 PyMySQL==1.0.2
 pyparsing==2.4.6