diff --git a/pom.xml b/pom.xml
index dda618a..8d2dc90 100644
--- a/pom.xml
+++ b/pom.xml
@@ -228,7 +228,7 @@
         <dependency>
             <groupId>com.upokecenter</groupId>
             <artifactId>cbor</artifactId>
-            <version>3.3.0</version>
+            <version>4.0.0</version>
         </dependency>
     </dependencies>
 </project>
\ No newline at end of file