diff --git a/pom.xml b/pom.xml
index 5aa081d1..e980d2a0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -70,7 +70,7 @@
       <dependency>
         <groupId>com.google.protobuf</groupId>
         <artifactId>protobuf-bom</artifactId>
-        <version>3.21.8</version>
+        <version>3.21.9</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>