diff --git a/pom.xml b/pom.xml
index b3f9cfc..b1578ca 100644
--- a/pom.xml
+++ b/pom.xml
@@ -31,7 +31,7 @@
     <io7m.java.targetJavaVersion>21</io7m.java.targetJavaVersion>
 
     <!-- Third-party dependencies. -->
-    <jqwik.version>1.8.5</jqwik.version>
+    <jqwik.version>1.9.0</jqwik.version>
     <junit.version>5.10.2</junit.version>
   </properties>