diff --git a/coursier-standalone b/coursier-standalone
index 5419cf784..14c18fecb 100755
Binary files a/coursier-standalone and b/coursier-standalone differ
diff --git a/project/generate-standalone-launcher.sh b/project/generate-standalone-launcher.sh
index 791e9f2d6..2109a34f3 100755
--- a/project/generate-standalone-launcher.sh
+++ b/project/generate-standalone-launcher.sh
@@ -23,6 +23,10 @@ cat >> coursier.pro << EOF
 -keep class coursier.cli.Coursier {
   public static void main(java.lang.String[]);
 }
+
+-keep class coursier.cli.IsolatedClassLoader {
+  public java.lang.String[] getIsolationTargets();
+}
 EOF
 
 # -noverify added in launcher below because of errors like