diff --git a/gradle.properties b/gradle.properties
index 0028dfd36..b27859423 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -75,7 +75,7 @@ junit.version=4.12
 kerby.version=1.1.1
 log4j2.version=2.17.1
 mockito.version=4.11.0
-protobuf.version=3.21.9
+protobuf.version=3.25.5
 scott-data-hsqldb.version=0.1
 servlet.version=4.0.1
 slf4j.version=1.7.25