diff --git a/serialiser/pom.xml b/serialiser/pom.xml
index caa5ca9..ed415a8 100644
--- a/serialiser/pom.xml
+++ b/serialiser/pom.xml
@@ -51,7 +51,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.12.5</version>
+            <version>2.21.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>