diff --git a/python/meson.build b/python/meson.build
index 2c9d59f..e45208e 100644
--- a/python/meson.build
+++ b/python/meson.build
@@ -5,7 +5,7 @@ project(
 	).stdout().strip('\n'),
 # 	'online.fxreader.uv',
 # 	['c', 'cpp'],
-	version: '0.1.5.38',
+	version: '0.1.5.39',
 # 	default_options: [
 # 		'cpp_std=c++23',
 # 		# 'prefer_static=true',
diff --git a/python/online/fxreader/pr34/commands_typed/cli.py b/python/online/fxreader/pr34/commands_typed/cli.py
index c8ec3a1..2e96846 100644
--- a/python/online/fxreader/pr34/commands_typed/cli.py
+++ b/python/online/fxreader/pr34/commands_typed/cli.py
@@ -679,6 +679,13 @@ class CLI(abc.ABC):
 		if env is None:
 			env = dict()
 
+		env = (
+			dict(
+				# to generate zip for .whl with a reproducible checksum
+				SOURCE_DATE_EPOCH='0',
+			)
+			| env
+		)
 		pyproject = cli_bootstrap.pyproject_load(project.source_dir / 'pyproject.toml')
 
 		pyproject_tool = pydantic.RootModel[PyProject.Tool].model_validate(pyproject.tool).root
diff --git a/releases/whl/online_fxreader_pr34-0.1.5.39-py3-none-any.whl b/releases/whl/online_fxreader_pr34-0.1.5.39-py3-none-any.whl
new file mode 100644
index 0000000..18d5537
--- /dev/null
+++ b/releases/whl/online_fxreader_pr34-0.1.5.39-py3-none-any.whl
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:174f4cb51997b50fb6e7e4cca475077a8d91029759417251e312487d7ee70c28
+size 76117