diff --git a/pom.xml b/pom.xml
index 21d940ee..7a851cf9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -150,7 +150,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>animal-sniffer-maven-plugin</artifactId>
-        <version>1.20</version>
+        <version>1.21</version>
         <executions>
           <execution>
             <phase>test</phase>