diff --git a/poetry.lock b/poetry.lock
index b895eac..1b8707b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1587,28 +1587,26 @@ files = [
 
 [[package]]
 name = "singer-sdk"
-version = "0.40.0a2"
+version = "0.40.0"
 description = "A framework for building Singer taps"
 optional = false
 python-versions = ">=3.8"
-files = [
-    {file = "singer_sdk-0.40.0a2-py3-none-any.whl", hash = "sha256:881b2993e1fbe177c5b18dc94b4e6977cd23662cd75aa0d2f5962684d3ecae85"},
-    {file = "singer_sdk-0.40.0a2.tar.gz", hash = "sha256:64fc1ca5ed4b566530373051ced6aa1455fec6c37aa77c6febcfd6fce215899e"},
-]
+files = []
+develop = false
 
 [package.dependencies]
 backoff = {version = ">=2.0.0", markers = "python_version < \"4\""}
 backports-datetime-fromisoformat = {version = ">=2.0.1", markers = "python_version < \"3.11\""}
-click = ">=8.0,<9.0"
+click = "~=8.0"
 fs = ">=2.4.16"
 importlib-metadata = {version = "<9.0.0", markers = "python_version < \"3.12\""}
-importlib-resources = {version = ">=5.12.0,<6.2.0 || >6.2.0,<6.3.0 || >6.3.0,<6.3.1 || >6.3.1", markers = "python_version < \"3.10\""}
+importlib-resources = {version = ">=5.12.0,!=6.2.0,!=6.3.0,!=6.3.1", markers = "python_version < \"3.10\""}
 inflection = ">=0.5.1"
 joblib = ">=1.3.0"
 jsonpath-ng = ">=1.5.3"
 jsonschema = ">=4.16.0"
 packaging = ">=23.1"
-pytest = {version = ">=7.2.1", optional = true, markers = "extra == \"docs\" or extra == \"testing\""}
+pytest = {version = ">=7.2.1", optional = true}
 python-dotenv = ">=0.20"
 PyYAML = ">=6.0"
 referencing = ">=0.30.0"
@@ -1621,12 +1619,18 @@ urllib3 = ">=1.26,<2"
 
 [package.extras]
 docs = ["furo (>=2024.5.6)", "myst-parser (>=3)", "pytest (>=7.2.1)", "sphinx (>=7)", "sphinx-copybutton (>=0.5.2)", "sphinx-inline-tabs (>=2023.4.21)", "sphinx-notfound-page (>=1.0.0)", "sphinx-reredirects (>=0.1.5)"]
-faker = ["faker (>=22.5,<27.0)"]
+faker = ["faker (>=22.5)"]
 jwt = ["PyJWT (>=2.4,<3.0)", "cryptography (>=3.4.6)"]
 parquet = ["numpy (>=1.22)", "numpy (>=1.22,<1.25)", "numpy (>=1.22,<2.1)", "pyarrow (>=13)"]
 s3 = ["fs-s3fs (>=1.1.1)"]
 testing = ["pytest (>=7.2.1)"]
 
+[package.source]
+type = "git"
+url = "https://github.com/meltano/sdk.git"
+reference = "HEAD"
+resolved_reference = "5d53b18d44fa5efdd19d171771ba0e9fb8ad03cf"
+
 [[package]]
 name = "six"
 version = "1.16.0"
@@ -1930,4 +1934,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8.1"
-content-hash = "580f2690c055886c859caefafb0f6c358ebdd6b01cbe73855092c3b275140128"
+content-hash = "07ca5ae97a209704b1e98aa8a2bd6b5227713ce33ed568fc7812dd654dfe59c7"
diff --git a/pyproject.toml b/pyproject.toml
index 252b464..ca381b2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ sqlalchemy = "<3"
 sshtunnel = "0.4.0"
 
 [tool.poetry.dependencies.singer-sdk]
-version = "~=0.40.0a1"
+git = "https://github.com/meltano/sdk.git"
 
 [tool.poetry.group.dev.dependencies]
 faker = ">=18.5.1"
@@ -55,7 +55,7 @@ types-jsonschema = ">=4.19.0.3"
 types-psycopg2 = ">=2.9.21.20240118"
 
 [tool.poetry.dev-dependencies.singer-sdk]
-version = "*"
+git = "https://github.com/meltano/sdk.git"
 extras = ["testing"]
 
 [tool.mypy]