diff --git a/build/pom.xml b/build/pom.xml
index 76486e1a6..b3c425f64 100644
--- a/build/pom.xml
+++ b/build/pom.xml
@@ -34,7 +34,7 @@
         <dependency>
             <groupId>net.sf.saxon</groupId>
             <artifactId>Saxon-HE</artifactId>
-            <version>11.4</version>
+            <version>12.1</version>
         </dependency>
         <dependency>
             <groupId>com.xmlcalabash</groupId>