diff --git a/pom.xml b/pom.xml
index a68b0a1..7612346 100644
--- a/pom.xml
+++ b/pom.xml
@@ -32,7 +32,7 @@
     <io7m.java.targetJavaVersion>21</io7m.java.targetJavaVersion>
 
     <!-- io7m dependencies. -->
-    <com.io7m.quarrel.version>1.8.0</com.io7m.quarrel.version>
+    <com.io7m.quarrel.version>1.8.1</com.io7m.quarrel.version>
 
     <!-- Third-party dependencies. -->
     <jqwik.version>1.9.3</jqwik.version>