diff --git a/DASH.prj b/DASH.prj
index f1e65983..7e36fe05 100644
--- a/DASH.prj
+++ b/DASH.prj
@@ -7,7 +7,7 @@
     <param.summary>A Matlab toolbox for paleoclimate data assimilation.</param.summary>
     <param.description />
     <param.screenshot />
-    <param.version>4.2.0</param.version>
+    <param.version>4.2.1</param.version>
     <param.output>${PROJECT_ROOT}\DASH.mltbx</param.output>
     <param.products.name />
     <param.products.id />