diff --git a/pom.xml b/pom.xml
index b38f190d..4c51ff3c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -19,7 +19,7 @@
 
     <!-- Dependency versions -->
     <assertj.version>3.19.0</assertj.version>
-    <immutables.version>2.8.8</immutables.version>
+    <immutables.version>2.8.9-ea-1</immutables.version>
     <jackson.version>2.12.0</jackson.version>
     <jmh.version>1.27</jmh.version>
     <junit4.version>4.13.1</junit4.version>