diff --git a/scripts/waifulib/zip.py b/scripts/waifulib/zip.py
index 6e903ba7..d47f1754 100644
--- a/scripts/waifulib/zip.py
+++ b/scripts/waifulib/zip.py
@@ -25,7 +25,11 @@ class ziparchive(Task.Task):
 				arcfile = src.path_from(self.relative_to)
 
 				Logs.debug('%s: %s <- %s as %s', self.__class__.__name__, outfile, infile, arcfile)
-				zf.write(infile, arcfile)
+
+				arcfile = zipfile.ZipInfo(filename=arcfile, date_time=(1980, 1, 1, 0, 0, 0))
+
+				with open(infile, 'rb') as f:
+					zf.writestr(arcfile, f.read())
 
 @TaskGen.feature('zip')
 def create_zip_archive(self):