diff --git a/swh/core/tarball.py b/swh/core/tarball.py
--- a/swh/core/tarball.py
+++ b/swh/core/tarball.py
@@ -249,7 +249,7 @@
 ADDITIONAL_ARCHIVE_FORMATS = [
     # name, extensions, function
     ("tar.Z|x", [".tar.Z", ".tar.x"], _unpack_tar),
-    ("jar", [".jar"], _unpack_jar),
+    ("jar", [".jar", ".war"], _unpack_jar),
     ("tbz2", [".tbz", "tbz2"], _unpack_tar),
     # FIXME: make this optional depending on the runtime lzip package install
     ("tar.lz", [".tar.lz"], _unpack_tar),
diff --git a/swh/core/tests/data/archives/hello.war b/swh/core/tests/data/archives/hello.war
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001