diff --git a/release-scripts/mandrel-release.java b/release-scripts/mandrel-release.java
index 4682436b..7e42d108 100755
--- a/release-scripts/mandrel-release.java
+++ b/release-scripts/mandrel-release.java
@@ -333,11 +333,11 @@ void createGHRelease(Set<String> jdkVersionsUsed)
 
     private List<File> assets(String fullVersion)
     {
-        final List<File> assets = List.of(
-            new File(downloadDir, "mandrel-java17-linux-amd64-" + fullVersion + ".tar.gz"),
-            new File(downloadDir, "mandrel-java17-linux-aarch64-" + fullVersion + ".tar.gz"),
-            new File(downloadDir, "mandrel-java17-windows-amd64-" + fullVersion + ".zip")
-        );
+        final List<File> assets = new ArrayList<>(List.of(
+                new File(downloadDir, "mandrel-java17-linux-amd64-" + fullVersion + ".tar.gz"),
+                new File(downloadDir, "mandrel-java17-linux-aarch64-" + fullVersion + ".tar.gz"),
+                new File(downloadDir, "mandrel-java17-windows-amd64-" + fullVersion + ".zip")
+        ));
         final int major = Integer.parseInt(fullVersion.substring(0, 2));
         if (major == 21)
         {