diff --git a/fdroidserver/scanner.py b/fdroidserver/scanner.py
index 7bc28444..85688cfb 100644
--- a/fdroidserver/scanner.py
+++ b/fdroidserver/scanner.py
@@ -136,7 +136,7 @@ def get_embedded_classes(apkfile, depth=0):
     if depth > 10:  # zipbomb protection
         return {_('Max recursion depth in ZIP file reached: %s') % apkfile}
 
-    apk_regex = re.compile(r'.*\.apk')
+    archive_regex = re.compile(r'.*\.(aab|aar|apk|apks|jar|war|xapk|zip)$')
     class_regex = re.compile(r'classes.*\.dex')
     classes = set()
 
@@ -144,7 +144,7 @@ def get_embedded_classes(apkfile, depth=0):
         with TemporaryDirectory() as tmp_dir, zipfile.ZipFile(apkfile, 'r') as apk_zip:
             for info in apk_zip.infolist():
                 # apk files can contain apk files, again
-                if apk_regex.search(info.filename):
+                if archive_regex.search(info.filename):
                     with apk_zip.open(info) as apk_fp:
                         classes = classes.union(get_embedded_classes(apk_fp, depth + 1))