diff --git a/sdks/aperture-py/poetry.lock b/sdks/aperture-py/poetry.lock
index f63e4db055..17a1b60f6c 100644
--- a/sdks/aperture-py/poetry.lock
+++ b/sdks/aperture-py/poetry.lock
@@ -83,33 +83,33 @@ files = [
 
 [[package]]
 name = "black"
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 description = "The uncompromising code formatter."
 optional = false
 python-versions = ">=3.8"
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 ]
 
 [package.dependencies]
@@ -1566,4 +1566,4 @@ testing = ["coverage (>=5.0.3)", "zope.event", "zope.testing"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "c2bf2550a82167acf4daff2e92f4f055dfb38cb82922a6ba8fe5758fd1b99985"
+content-hash = "92b71b5fcd634c9b31a924b13f6e1998d9ec662febe1849c840c6f9062855472"
diff --git a/sdks/aperture-py/pyproject.toml b/sdks/aperture-py/pyproject.toml
index 5402f2e794..b2115d3771 100644
--- a/sdks/aperture-py/pyproject.toml
+++ b/sdks/aperture-py/pyproject.toml
@@ -28,7 +28,7 @@ pydoctor = "^23.9.1"
 
 [tool.poetry.group.dev.dependencies]
 grpcio-tools = "^1.59.2"
-black = "^23.1.0"
+black = ">=23.1,<25.0"
 mypy = "^1.1.1"
 grpc-stubs = "^1.24.12.1"