diff --git a/noxfile.py b/noxfile.py
index b7730b43ff..0b50d37cf6 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -121,6 +121,14 @@ def benches(session: Session) -> None:
     )
 
 
+@session(name="deps", python=python_versions)
+def dependencies(session: Session) -> None:
+    """Check issues with dependencies."""
+    session.install(".[s3,testing]")
+    session.install("deptry")
+    session.run("deptry", "singer_sdk", *session.posargs)
+
+
 @session(python=main_python_version)
 def update_snapshots(session: Session) -> None:
     """Update pytest snapshots."""
diff --git a/poetry.lock b/poetry.lock
index 144a62dc9b..451faed9f7 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -519,6 +519,30 @@ ssh = ["bcrypt (>=3.1.5)"]
 test = ["certifi", "pretend", "pytest (>=6.2.0)", "pytest-benchmark", "pytest-cov", "pytest-xdist"]
 test-randomorder = ["pytest-randomly"]
 
+[[package]]
+name = "deptry"
+version = "0.16.1"
+description = "A command line utility to check for unused, missing and transitive dependencies in a Python project."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "deptry-0.16.1-cp38-abi3-macosx_10_12_x86_64.whl", hash = "sha256:29ed8ae61b8f5664dd484717c79eef7ec66d965940efd828fca0d3c09220a1db"},
+    {file = "deptry-0.16.1-cp38-abi3-macosx_11_0_arm64.whl", hash = "sha256:738a772b538f51e9a7bb8d5cb9a61cfea8794a79371d171919b01cff0dc895bf"},
+    {file = "deptry-0.16.1-cp38-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:56b78f7c860def8000e93f88345a24809f1b91e2f7836ac9a08285cb405e2762"},
+    {file = "deptry-0.16.1-cp38-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:c3e86a04ea87ddece0f68ba204feb950f588205808c8320e6628300f03ff66dc"},
+    {file = "deptry-0.16.1-cp38-abi3-win_amd64.whl", hash = "sha256:01b5098739a56c93f3e1e40efec5f20452f22a9a8436a59809d46201fcb94bcf"},
+    {file = "deptry-0.16.1-pp310-pypy310_pp73-macosx_10_12_x86_64.whl", hash = "sha256:7e29dc4c1bbb933c9482e8cef85fafe2be7f46aeb90a8a07ba5f2b22af60876f"},
+    {file = "deptry-0.16.1-pp310-pypy310_pp73-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:d8dfab68c247566c87a40f55f405be8549ffe4cea0b9b5384b7ae73a6f1d5cd1"},
+    {file = "deptry-0.16.1-pp310-pypy310_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:1228493926b6e59cd2df7cb6016e10c255553cc31db24edcf7fc8d5474b81be6"},
+    {file = "deptry-0.16.1-pp310-pypy310_pp73-win_amd64.whl", hash = "sha256:99c3ac60b78ad1b8fb9844c25393e7ebc969cc950601ce3c050f56d196da5a79"},
+    {file = "deptry-0.16.1.tar.gz", hash = "sha256:39fb62da4a8f4d17ed282310f7bcaadec55a95a8c471b01e0fcdf5351a7ac323"},
+]
+
+[package.dependencies]
+click = ">=8.0.0,<9"
+colorama = {version = ">=0.4.6", markers = "sys_platform == \"win32\""}
+tomli = {version = ">=2.0.1", markers = "python_version < \"3.11\""}
+
 [[package]]
 name = "docutils"
 version = "0.20.1"
@@ -2644,4 +2668,4 @@ testing = ["pytest", "pytest-durations"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8"
-content-hash = "fb53e23587b43db9d5dcf2150b7d6d8c4c21cb0104afba8f0fc8da803e08e730"
+content-hash = "73a1b66976e6a559796c566916561f3df254ccf756e834af58b59a45d36d0015"
diff --git a/pyproject.toml b/pyproject.toml
index 2ece8c6196..6e353beb68 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -118,6 +118,7 @@ faker = ["faker"]
 
 [tool.poetry.group.dev.dependencies]
 coverage = {extras = ["toml"], version = ">=7.4"}
+deptry = ">=0.15.0"
 
 # TODO: Remove the Python 3.12 marker when DuckDB supports it
 duckdb = { version = ">=0.8.0", python = "<3.12" }
@@ -219,6 +220,43 @@ exclude_also = [
 fail_under = 82
 show_missing = true
 
+[tool.deptry]
+known_first_party = ["singer_sdk"]
+pep621_dev_dependency_groups = ["testing"]
+
+[tool.deptry.package_module_name_map]
+backports-datetime-fromisoformat = "backports"
+importlib-metadata = "importlib_metadata"
+importlib-resources = "importlib_resources"
+PyJWT = "jwt"
+types-jsonschema = "jsonschema"
+types-pytz = "pytz"
+types-PyYAML = "yaml"
+types-requests = "requests"
+
+[tool.deptry.per_rule_ignores]
+DEP002 = [
+    # Deprecated dependencies
+    "python-dateutil",
+    # Transitive constraints
+    "numpy",
+    "urllib3",
+    # Python version-specific dependencies
+    "backports-datetime-fromisoformat",
+    # Docs extras
+    "furo",
+    "myst-parser",
+    "sphinx",
+    "sphinx-autobuild",
+    "sphinx-copybutton",
+    "sphinx-inline-tabs",
+    "sphinx-notfound-page",
+    "sphinx-reredirects",
+    # Plugins
+    "fs-s3fs",
+    "pytest-durations",
+]
+
 [tool.mypy]
 exclude = "tests"
 files = "singer_sdk"