diff --git a/prometheus/Makefile b/prometheus/Makefile
index 9009860..20b575b 100644
--- a/prometheus/Makefile
+++ b/prometheus/Makefile
@@ -27,7 +27,7 @@ install: venv
 	$(VENV_RUN); python -m pip install -e .[dev]
 
 dist: venv
-	$(VENV_RUN); python setup.py sdist bdist_wheel
+	$(VENV_RUN); pip install --upgrade build; python -m build
 
 publish: clean-dist venv dist
 	$(VENV_RUN); pip install --upgrade twine; twine upload dist/*
diff --git a/prometheus/pyproject.toml b/prometheus/pyproject.toml
index ee05dda..e7132b5 100644
--- a/prometheus/pyproject.toml
+++ b/prometheus/pyproject.toml
@@ -16,7 +16,6 @@ keywords = ["localstack", "localstack-extension", "extension", "prometheus", "me
 classifiers = []
 dependencies = [
     "prometheus-client (>=0.21.1,<0.22.0)",
-    "localstack-core (>=4.2.0,<5.0.0)",
 ]
 
 [project.urls]
@@ -24,7 +23,8 @@ Homepage = "https://github.com/localstack/localstack-extensions/tree/main/promet
 
 [project.optional-dependencies]
 dev = [
-    "localstack>=0.0.0.dev"
+    "localstack>=0.0.0.dev",
+    "localstack-core",
 ]
 
 [tool.black]