diff --git a/pom.xml b/pom.xml
index 45a86c7..6f3f21b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -98,7 +98,7 @@
       <dependency>
         <groupId>it.unimi.dsi</groupId>
         <artifactId>fastutil</artifactId>
-        <version>8.5.4</version>
+        <version>8.5.6</version>
       </dependency>
       <dependency>
         <groupId>org.junit.jupiter</groupId>