diff --git a/pyglossary/logger.py b/pyglossary/logger.py
index ef11ec654..0a705597c 100644
--- a/pyglossary/logger.py
+++ b/pyglossary/logger.py
@@ -22,6 +22,7 @@
 
 
 __all__ = [
+	"TRACE",
 	"StdLogHandler",
 	"format_exception",
 ]
diff --git a/pyglossary/plugin_manager.py b/pyglossary/plugin_manager.py
index 4bb3d24de..56ec15132 100644
--- a/pyglossary/plugin_manager.py
+++ b/pyglossary/plugin_manager.py
@@ -37,7 +37,7 @@
 )
 from .plugin_prop import PluginProp
 
-__all__ = ["PluginManager"]
+__all__ = ["DetectedFormat", "PluginManager"]
 
 log = logging.getLogger("pyglossary")
 
diff --git a/pyglossary/plugins/freedict/options.py b/pyglossary/plugins/freedict/options.py
index 66a2914ce..c753d7007 100644
--- a/pyglossary/plugins/freedict/options.py
+++ b/pyglossary/plugins/freedict/options.py
@@ -7,6 +7,9 @@
 	StrOption,
 )
 
+__all__ = ["optionsProp"]
+
+
 optionsProp: "dict[str, Option]" = {
 	"resources": BoolOption(
 		comment="Enable resources / data files",
diff --git a/pyglossary/plugins/freedict/reader.py b/pyglossary/plugins/freedict/reader.py
index ef70b1844..3d148c9b7 100644
--- a/pyglossary/plugins/freedict/reader.py
+++ b/pyglossary/plugins/freedict/reader.py
@@ -24,6 +24,9 @@
 from .options import optionsProp
 from .utils import XMLLANG, ReaderUtils
 
+__all__ = ["Reader"]
+
+
 TEI = "{http://www.tei-c.org/ns/1.0}"
 ENTRY = f"{TEI}entry"
 INCLUDE = "{http://www.w3.org/2001/XInclude}include"
diff --git a/pyglossary/plugins/freedict/utils.py b/pyglossary/plugins/freedict/utils.py
index 5e1b413d4..2208504fc 100644
--- a/pyglossary/plugins/freedict/utils.py
+++ b/pyglossary/plugins/freedict/utils.py
@@ -14,6 +14,9 @@
 from pyglossary.langs import langDict
 from pyglossary.langs.writing_system import getWritingSystemFromText
 
+__all__ = ["XMLLANG", "ReaderUtils"]
+
+
 XMLLANG = "{http://www.w3.org/XML/1998/namespace}lang"
 
 
diff --git a/pyglossary/plugins/quickdic6/commons.py b/pyglossary/plugins/quickdic6/commons.py
index 11bf2a940..ae158b44f 100644
--- a/pyglossary/plugins/quickdic6/commons.py
+++ b/pyglossary/plugins/quickdic6/commons.py
@@ -1,6 +1,16 @@
 # -*- coding: utf-8 -*-
 from __future__ import annotations
 
+__all__ = [
+	"HASH_SET_CAPACITY_FACTOR",
+	"HASH_SET_INIT",
+	"HASH_SET_INIT2",
+	"LINKED_HASH_SET_INIT",
+	"EntryIndexTuple",
+	"IndexEntryType",
+]
+
+
 HASH_SET_INIT = (
 	b"\xac\xed"  # magic
 	b"\x00\x05"  # version
diff --git a/pyglossary/plugins/quickdic6/comparator.py b/pyglossary/plugins/quickdic6/comparator.py
index 9a5219fae..383e5d9ae 100644
--- a/pyglossary/plugins/quickdic6/comparator.py
+++ b/pyglossary/plugins/quickdic6/comparator.py
@@ -6,6 +6,8 @@
 if TYPE_CHECKING:
 	from typing import Literal
 
+__all__ = ["Comparator"]
+
 
 class Comparator:
 	def __init__(self, locale_str: str, normalizer_rules: str, version: int) -> None:
diff --git a/pyglossary/plugins/quickdic6/quickdic.py b/pyglossary/plugins/quickdic6/quickdic.py
index aeb6e9c94..f2f6edae3 100644
--- a/pyglossary/plugins/quickdic6/quickdic.py
+++ b/pyglossary/plugins/quickdic6/quickdic.py
@@ -12,6 +12,8 @@
 if TYPE_CHECKING:
 	from .commons import EntryIndexTuple, IndexEntryType
 
+__all__ = ["QuickDic"]
+
 
 class QuickDic:
 	def __init__(  # noqa: PLR0913
diff --git a/pyglossary/plugins/quickdic6/read_funcs.py b/pyglossary/plugins/quickdic6/read_funcs.py
index 0e614706f..644979e55 100644
--- a/pyglossary/plugins/quickdic6/read_funcs.py
+++ b/pyglossary/plugins/quickdic6/read_funcs.py
@@ -21,6 +21,18 @@
 	LINKED_HASH_SET_INIT,
 )
 
+__all__ = [
+	"read_entry_html",
+	"read_entry_index",
+	"read_entry_pairs",
+	"read_entry_source",
+	"read_entry_text",
+	"read_int",
+	"read_list",
+	"read_long",
+	"read_string",
+]
+
 
 def read_byte(fp: IO[bytes]) -> int:
 	return struct.unpack(">b", fp.read(1))[0]
diff --git a/pyglossary/plugins/quickdic6/reader.py b/pyglossary/plugins/quickdic6/reader.py
index 94c53080c..cbd932b41 100644
--- a/pyglossary/plugins/quickdic6/reader.py
+++ b/pyglossary/plugins/quickdic6/reader.py
@@ -27,6 +27,8 @@
 	read_string,
 )
 
+__all__ = ["Reader"]
+
 
 class Reader:
 	depends = {
diff --git a/pyglossary/plugins/quickdic6/write_funcs.py b/pyglossary/plugins/quickdic6/write_funcs.py
index 383d8384f..a8b071afe 100644
--- a/pyglossary/plugins/quickdic6/write_funcs.py
+++ b/pyglossary/plugins/quickdic6/write_funcs.py
@@ -22,6 +22,18 @@
 	LINKED_HASH_SET_INIT,
 )
 
+__all__ = [
+	"write_entry_html",
+	"write_entry_index",
+	"write_entry_pairs",
+	"write_entry_source",
+	"write_entry_text",
+	"write_int",
+	"write_list",
+	"write_long",
+	"write_string",
+]
+
 
 def write_int(fp: IO[bytes], val: int) -> int:
 	return fp.write(struct.pack(">i", val))
diff --git a/pyglossary/plugins/quickdic6/writer.py b/pyglossary/plugins/quickdic6/writer.py
index acc9c7de0..7fbb47b18 100644
--- a/pyglossary/plugins/quickdic6/writer.py
+++ b/pyglossary/plugins/quickdic6/writer.py
@@ -24,6 +24,9 @@
 	write_string,
 )
 
+__all__ = ["Writer"]
+
+
 default_de_normalizer_rules = (
 	":: Lower; 'ae' > 'ä'; 'oe' > 'ö'; 'ue' > 'ü'; 'ß' > 'ss'; "
 )
diff --git a/pyglossary/sort_keys_types.py b/pyglossary/sort_keys_types.py
index f2eadd1eb..c9af66922 100644
--- a/pyglossary/sort_keys_types.py
+++ b/pyglossary/sort_keys_types.py
@@ -45,7 +45,9 @@ def __call__(
 
 
 __all__ = [
+	"LocaleSQLiteSortKeyMakerType",
 	"LocaleSortKeyMakerType",
+	"SQLiteSortKeyMakerType",
 	"SQLiteSortKeyType",
 	"SortKeyMakerType",
 	"SortKeyType",
diff --git a/tests/glossary_v2_errors_test.py b/tests/glossary_v2_errors_test.py
index c516dc41b..832adb812 100644
--- a/tests/glossary_v2_errors_test.py
+++ b/tests/glossary_v2_errors_test.py
@@ -13,7 +13,7 @@
 from pyglossary.glossary_v2 import ConvertArgs, Error, Glossary
 from pyglossary.os_utils import rmtree
 
-__all__ = ["TestGlossaryErrorsBase"]
+__all__ = ["TestGlossaryErrors", "TestGlossaryErrorsBase"]
 
 
 Glossary.init()