diff --git a/Dockerfile b/Dockerfile
index 403ce31..8e2d6fb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 ARG RUNTIME_VERSION="3.11"
 ARG DISTRO_VERSION="3.18"
-ARG PULUMI_VERSION="3.91.0"
+ARG PULUMI_VERSION="3.89.0"
 
 FROM python:${RUNTIME_VERSION}-alpine${DISTRO_VERSION} AS builder
 ARG PULUMI_VERSION
@@ -33,8 +33,7 @@ ENV PATH="$VIRTUAL_ENV/bin:$PATH"
 # Install CloudBender
 WORKDIR /app
 COPY . /app
-RUN pip install -r requirements.txt
-RUN pip install . --no-deps
+RUN pip install .
 
 # minimal pulumi
 RUN cd /root/.pulumi/bin && rm -f *dotnet *yaml *go *java && strip pulumi* || true
diff --git a/pyproject.toml b/pyproject.toml
index 1d0b920..32346e9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,18 +13,21 @@ readme = "README.md"
 license = "AGPL-3.0-or-later"
 requires-python = ">=3.9"
 dependencies = [
-        "boto3",
-        "mock",
-        "Jinja2>=3.0.0",
-        "click",
-        "pexpect",
-        "cfn-lint>=0.34",
-        "python-minifier",
-        "pulumi>=3.67.0",
-        "pulumi-aws>5.0.0",
-        "pulumi-aws-native",
-        "pulumi-policy",
-]
+        "boto3==1.28.70",
+        "mock==5.1.0",
+        "Jinja2==3.1.2",
+        "click==8.1.7",
+        "pexpect==4.8.0",
+        "python-minifier==2.9.0",
+        "cfn-lint==0.83.0",
+        "ruamel.yaml==0.18.2",
+        "pulumi==3.89.0",
+        "pulumi-aws==6.6.1",
+        "pulumi-aws-native==0.82.0",
+        "pulumi-policy==1.7.0",
+        "pulumi-command==0.9.1",
+        ]
+
 classifiers = [
         "Development Status :: 4 - Beta",
         "Environment :: Console",
@@ -33,6 +36,13 @@ classifiers = [
         "License :: OSI Approved :: GNU Affero General Public License v3",
 ]
 
+[project.optional-dependencies]
+tests = [
+  'flake',
+  'pytest',
+  'twine',
+]
+
 [project.urls]
 "Homepage" = "https://git.zero-downtime.net/ZeroDownTime/CloudBender"
 
@@ -44,3 +54,4 @@ source = "vcs"
 
 [tool.isort]
 profile = "black"
+
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index c588e45..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-boto3==1.28.70
-mock==5.1.0
-Jinja2==3.1.2
-click==8.1.7
-pexpect==4.8.0
-python-minifier==2.9.0
-cfn-lint==0.83.0
-ruamel.yaml==0.18.2
-pulumi==3.91.0
-pulumi-aws==6.6.1
-pulumi-aws-native==0.82.0
-pulumi-policy==1.7.0
-pulumi-command==0.9.1
-
-# flake8
-# pytest
-# twine