diff --git a/pyagentspec/pyproject.toml b/pyagentspec/pyproject.toml
index 63e9d7f1..d1024da0 100644
--- a/pyagentspec/pyproject.toml
+++ b/pyagentspec/pyproject.toml
@@ -1,7 +1,7 @@
 [build-system]
 requires = [
     # lower bound 78.1.1 to address CVE-2025-47273
-    "setuptools>=78.1.1,<82.0.0",
+    "setuptools>=83.0.0,<84.0.0",
     "wheel",
     # setuptools-scm lets us include all necessary files (e.g. .pyx files) in the source
     # distribution (sdist) without needing a MANIFEST.in file.
diff --git a/pyagentspec/requirements-dev-common.txt b/pyagentspec/requirements-dev-common.txt
index 419145fe..3d8efdeb 100644
--- a/pyagentspec/requirements-dev-common.txt
+++ b/pyagentspec/requirements-dev-common.txt
@@ -13,7 +13,7 @@ flake8-copyright==0.2.4
 pyflakes==2.5.0
 pytest==9.0.3
 pytest-asyncio==1.3.0
-setuptools==81.0.0
+setuptools==83.0.0
 
 # stubs for mypy
 types-PyYAML