diff --git a/pom.xml b/pom.xml
index 4e9e468..e212219 100644
--- a/pom.xml
+++ b/pom.xml
@@ -126,7 +126,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>30.1.1-jre</version>
+            <version>31.1-jre</version>
         </dependency>
         <dependency>
             <groupId>javax.mail</groupId>