diff --git a/poetry.lock b/poetry.lock
index 11916ab..e408a44 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1178,20 +1178,6 @@ tomli = {version = ">=1.0.0", markers = "python_version < \"3.11\""}
 [package.extras]
 testing = ["argcomplete", "attrs (>=19.2.0)", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "setuptools", "xmlschema"]
 
-[[package]]
-name = "pytest-durations"
-version = "1.2.0"
-description = "Pytest plugin reporting fixtures and test functions execution time."
-optional = false
-python-versions = ">=3.6.2"
-files = [
-    {file = "pytest-durations-1.2.0.tar.gz", hash = "sha256:75793f7c2c393a947de4a92cc205e8dcb3d7fcde492628926cca97eb8e87077d"},
-    {file = "pytest_durations-1.2.0-py3-none-any.whl", hash = "sha256:210c649d989fdf8e864b7f614966ca2c8be5b58a5224d60089a43618c146d7fb"},
-]
-
-[package.dependencies]
-pytest = ">=4.6"
-
 [[package]]
 name = "python-dateutil"
 version = "2.8.2"
@@ -1586,29 +1572,26 @@ files = [
 
 [[package]]
 name = "singer-sdk"
-version = "0.39.1"
+version = "0.39.1.post9.dev0+477a5eb6"
 description = "A framework for building Singer taps"
 optional = false
 python-versions = ">=3.8"
-files = [
-    {file = "singer_sdk-0.39.1-py3-none-any.whl", hash = "sha256:0c66709678d36f584db313f19c64c7d3b443c6879e5e476b2934918581fb213e"},
-    {file = "singer_sdk-0.39.1.tar.gz", hash = "sha256:1616ac22c6917ddf2267a53e8802c10247a5e742bfb284e9dc9632ef9dc50ca4"},
-]
+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-durations = {version = ">=1.2.0", optional = true, markers = "extra == \"testing\""}
+pytest = {version = ">=7.2.1", optional = true}
 python-dotenv = ">=0.20"
 PyYAML = ">=6.0"
 referencing = ">=0.30.0"
@@ -1625,7 +1608,13 @@ faker = ["faker (>=22.5,<27.0)"]
 jwt = ["PyJWT (>=2.4,<3.0)", "cryptography (>=3.4.6)"]
 parquet = ["numpy (>=1.22)", "numpy (>=1.22,<1.25)", "pyarrow (>=13)"]
 s3 = ["fs-s3fs (>=1.1.1)"]
-testing = ["pytest (>=7.2.1)", "pytest-durations (>=1.2.0)"]
+testing = ["pytest (>=7.2.1)"]
+
+[package.source]
+type = "git"
+url = "https://github.com/meltano/sdk.git"
+reference = "HEAD"
+resolved_reference = "477a5eb6879b9e133f1b43b821c26d590ab183bf"
 
 [[package]]
 name = "six"
@@ -1930,4 +1919,4 @@ test = ["big-O", "jaraco.functools", "jaraco.itertools", "jaraco.test", "more-it
 [metadata]
 lock-version = "2.0"
 python-versions = "<3.13,>=3.8.1"
-content-hash = "49a89dbd1a9419440833a6ff3f88741a4946ba298b833023fab5c26c50401b5f"
+content-hash = "aa84c4ee051293a4801c6d3a535dc84945acec93c1e005c6563505d964dca3e1"
diff --git a/pyproject.toml b/pyproject.toml
index 3f9bd89..d561fb0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ sqlalchemy = "<3"
 sshtunnel = "0.4.0"
 
 [tool.poetry.dependencies.singer-sdk]
-version = "~=0.39.0"
+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]