diff --git a/gradle.properties b/gradle.properties
index de3705e6..4f87ec24 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,7 +9,7 @@ saxonGroup=net.sf.saxon
 saxonName=Saxon-HE
 saxonVersion=11.5
 
-xmlresolverVersion=5.1.2
+xmlresolverVersion=5.1.3
 
 docsBaseURI=https://ndw.github.io/xmlcalabash1-docs/download/