diff --git a/.github/workflows/test_tap.yml b/.github/workflows/test_tap.yml
index 0edad2c2..6016a531 100644
--- a/.github/workflows/test_tap.yml
+++ b/.github/workflows/test_tap.yml
@@ -31,6 +31,7 @@ jobs:
     strategy:
       matrix:
         python-version:
+        - "3.12"
         - "3.11"
         - "3.10"
         - "3.9"
diff --git a/poetry.lock b/poetry.lock
index b3a5be2d..392d8429 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1688,5 +1688,5 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 
 [metadata]
 lock-version = "2.0"
-python-versions = ">=3.8,<3.12"
-content-hash = "bcfc8e8af1bda976bb02b973e817cdf28b85ed784756974a825ede760075689f"
+python-versions = ">=3.8"
+content-hash = "f258c2824cb2b8f1b39e2728e830b4550eebda2832ed89e087514466e11e6b3c"
diff --git a/pyproject.toml b/pyproject.toml
index 5667d827..6301919f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,11 +25,11 @@ classifiers = [
 
 [tool.poetry.dependencies]
 PyJWT = "2.8.0"
-python = ">=3.8,<3.12"
+python = ">=3.8"
 requests = "~=2.32.3"
 # For local SDK dev:
 # singer-sdk = {path = "../singer-sdk", develop = true}
-singer-sdk = "~=0.32.0"
+singer-sdk = { version = "~=0.32.0", python = "<4" }
 types-simplejson = "~=3.19.0"
 types-python-dateutil = "~=2.9.0"
 nested-lookup = "~=0.2.25"
diff --git a/tox.ini b/tox.ini
index 6b48fe08..d2651d32 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 isolated_build = true
-envlist = py36, py38, py39
+envlist = py3{8,9,10,11,12}
 
 [testenv]
 whitelist_externals = poetry