diff --git a/pom.xml b/pom.xml
index a017f1da6..ac6e713ef 100644
--- a/pom.xml
+++ b/pom.xml
@@ -149,7 +149,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>animal-sniffer-maven-plugin</artifactId>
-                <version>1.20</version>
+                <version>1.21</version>
                 <configuration>
                     <signature>
                         <groupId>org.codehaus.mojo.signature</groupId>