diff --git a/src/test/io/github/scala_cli/zip/CustomZipInputStreamTests.scala b/src/test/io/github/scala_cli/zip/CustomZipInputStreamTests.scala
index 88e1ee0..5322672 100644
--- a/src/test/io/github/scala_cli/zip/CustomZipInputStreamTests.scala
+++ b/src/test/io/github/scala_cli/zip/CustomZipInputStreamTests.scala
@@ -1,3 +1,4 @@
+//> using scala "2.13.8"
 //> using lib "com.lihaoyi::utest::0.7.10"
 //> using lib "io.get-coursier:interface:1.0.7"