diff --git a/poetry.lock b/poetry.lock
index 9ed6e49..e77174a 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1709,19 +1709,17 @@ files = [
 
 [[package]]
 name = "singer-sdk"
-version = "0.34.1"
+version = "0.0.0"
 description = "A framework for building Singer taps"
 optional = false
 python-versions = ">=3.7.1"
-files = [
-    {file = "singer_sdk-0.34.1-py3-none-any.whl", hash = "sha256:2b9afa40722c2d7288992d86d16298128e38387941306267d908b9cd954227a3"},
-    {file = "singer_sdk-0.34.1.tar.gz", hash = "sha256:5da11da3de07cc31cc8c1f3f19a40b8f8be4a0df9b5535fb90880c263e58aee5"},
-]
+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"
 cryptography = ">=3.4.6"
 fs = ">=2.4.16"
 importlib-metadata = {version = "<7.0.0", markers = "python_version < \"3.12\""}
@@ -1733,9 +1731,9 @@ jsonschema = {version = ">=4.16.0", markers = "python_version >= \"3.8\""}
 memoization = {version = ">=0.3.2,<0.5.0", markers = "python_version < \"4\""}
 packaging = ">=23.1"
 pendulum = {version = ">=2.1.0,<4", markers = "python_version >= \"3.8\""}
-PyJWT = ">=2.4,<3.0"
-pytest = {version = ">=7.2.1", optional = true, markers = "extra == \"testing\""}
-pytest-durations = {version = ">=1.2.0", optional = true, markers = "extra == \"testing\""}
+PyJWT = "~=2.4"
+pytest = {version = ">=7.2.1", optional = true}
+pytest-durations = {version = ">=1.2.0", optional = true}
 python-dateutil = ">=2.8.2"
 python-dotenv = ">=0.20"
 pytz = ">=2022.2.1"
@@ -1753,6 +1751,12 @@ parquet = ["numpy (<1.22)", "numpy (>=1.22)", "numpy (>=1.22,<1.25)", "pyarrow (
 s3 = ["fs-s3fs (>=1.1.1)"]
 testing = ["pytest (>=7.2.1)", "pytest-durations (>=1.2.0)"]
 
+[package.source]
+type = "git"
+url = "https://github.com/meltano/sdk.git"
+reference = "1385aebf694df8755cc3a2232ad99693d479db73"
+resolved_reference = "1385aebf694df8755cc3a2232ad99693d479db73"
+
 [[package]]
 name = "six"
 version = "1.16.0"
@@ -1987,4 +1991,4 @@ testing = ["big-O", "jaraco.functools", "jaraco.itertools", "more-itertools", "p
 [metadata]
 lock-version = "2.0"
 python-versions = "<3.13,>=3.8.1"
-content-hash = "be7623681c33f3fbcb99780e77d59c583442841d5c413d79243404166c18edcc"
+content-hash = "d654a7f7634183ab96d2f18d1c5da28751ef15df1f9713e956c807072049e424"
diff --git a/pyproject.toml b/pyproject.toml
index 00a4bb0..8542f2e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,10 +33,10 @@ packages = [
 
 [tool.poetry.dependencies]
 python = "<3.13,>=3.8.1"
-singer-sdk = "~=0.34.0"
 psycopg2-binary = "2.9.9"
 sqlalchemy = "<2"
 sshtunnel = "0.4.0"
+singer-sdk = {git = "https://github.com/meltano/sdk.git", rev="1385aebf694df8755cc3a2232ad99693d479db73"}
 
 [tool.poetry.group.dev.dependencies]
 black = "^23.1.0"
@@ -47,7 +47,7 @@ mypy = "1.8.0"
 pendulum = "~=3.0"
 pre-commit = "^3.0.4"
 pydocstyle = "^6.1.1"
-singer-sdk = {version = "*", extras = ["testing"]}
+singer-sdk = {git = "https://github.com/meltano/sdk.git", rev = "1385aebf694df8755cc3a2232ad99693d479db73", extras = ["testing"]}
 tox = "^4"
 
 [tool.isort]