diff --git a/planetiler-custommap/pom.xml b/planetiler-custommap/pom.xml
index 67bd73a4..0336802f 100644
--- a/planetiler-custommap/pom.xml
+++ b/planetiler-custommap/pom.xml
@@ -45,7 +45,7 @@
       <dependency>
         <groupId>org.projectnessie.cel</groupId>
         <artifactId>cel-bom</artifactId>
-        <version>0.3.20</version>
+        <version>0.3.21</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>