diff --git a/stdlib/2and3/bz2.pyi b/stdlib/2and3/bz2.pyi
new file mode 100644
index 000000000..31db7b704
--- /dev/null
+++ b/stdlib/2and3/bz2.pyi
@@ -0,0 +1,6 @@
+# Stubs for bz2
+
+# TODO: This stub is incomplete
+
+def compress(data: bytes, compresslevel: int = ...) -> bytes: ...
+def decompress(data: bytes) -> bytes: ...
diff --git a/stdlib/3/bz2.pyi b/stdlib/3/bz2.pyi
deleted file mode 100644
index e69de29bb..000000000