diff --git a/src/babashka/impl/classes.clj b/src/babashka/impl/classes.clj
index 98d446ea..a148b8f9 100644
--- a/src/babashka/impl/classes.clj
+++ b/src/babashka/impl/classes.clj
@@ -256,6 +256,7 @@
           java.util.zip.GZIPInputStream
           java.util.zip.GZIPOutputStream
           java.util.zip.ZipInputStream
+          java.util.zip.ZipOutputStream
           java.util.zip.ZipEntry
           ~(symbol "[B")
           ~(symbol "[I")