diff --git a/src/obspec/__init__.py b/src/obspec/__init__.py
index e10c694..6a27dfb 100644
--- a/src/obspec/__init__.py
+++ b/src/obspec/__init__.py
@@ -29,3 +29,41 @@
 from ._put import Put, PutAsync, PutMode, PutResult, UpdateVersion
 from ._rename import Rename, RenameAsync
 from ._version import __version__
+
+__all__ = [
+    "Attribute",
+    "Attributes",
+    "BufferStream",
+    "Copy",
+    "CopyAsync",
+    "Delete",
+    "DeleteAsync",
+    "Get",
+    "GetAsync",
+    "GetOptions",
+    "GetRange",
+    "GetRangeAsync",
+    "GetRanges",
+    "GetRangesAsync",
+    "GetResult",
+    "Head",
+    "HeadAsync",
+    "List",
+    "ListChunkType_co",
+    "ListResult",
+    "ListStream",
+    "ListWithDelimiter",
+    "ListWithDelimiterAsync",
+    "ObjectMeta",
+    "OffsetRange",
+    "Put",
+    "PutAsync",
+    "PutMode",
+    "PutResult",
+    "Rename",
+    "RenameAsync",
+    "SuffixRange",
+    "UpdateVersion",
+    "__version__",
+    "exceptions",
+]