diff --git a/duo-client/pom.xml b/duo-client/pom.xml
index 9c2e50b..76c43d5 100644
--- a/duo-client/pom.xml
+++ b/duo-client/pom.xml
@@ -56,7 +56,7 @@
     <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
-      <version>32.0.0-jre</version>
+      <version>33.7.1-jre</version>
       <scope>test</scope>
     </dependency>
     <dependency>