diff --git a/pyproject.toml b/pyproject.toml
index 2e4f8be..be8e8b4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,14 +11,7 @@ authors = [
 description = "Create your own Shit Happens playing cards!"
 readme = "README.md"
 requires-python = ">=3.11"
-dependencies = [
-    "matplotlib",
-    "pandas",
-    "openpyxl", # For pandas to open excel files.
-    "PyPDF2",
-    "tqdm",
-    "babel",
-]
+dynamic = ["dependencies", "optional-dependencies"]
 license = {file = "LICENSE"}
 keywords = ["shit happens", "card-game"]
 classifiers = [
@@ -35,9 +28,6 @@ classifiers = [
     "Typing :: Typed",
 ]
 
-[project.optional-dependencies]
-ui = ["streamlit"]
-
 [project.urls]
 "Homepage" = "https://github.com/siemdejong/shit-happens"
 "Bug Tracker" = "https://github.com/siemdejong/shit-happens/issues"
@@ -56,6 +46,10 @@ namespaces = false
 [tool.setuptools.package-data]
 shithappens = ["opensans/fonts/ttf/*.ttf", "images/*.png", "locales/*/LC_MESSAGES/*.mo"]
 
+[tool.setuptools.dynamic]
+dependencies = {file = ["requirements.txt"]}
+optional-dependencies = {dev = { file = ["requirements-dev.txt"] }}
+
 [tool.ruff]
 extend-exclude = ["opensans"]
 
diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 0000000..ede3eb4
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1 @@
+ruff
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..f7aef4c
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,6 @@
+matplotlib
+pandas
+openpyxl
+PyPDF2
+tqdm
+babel
\ No newline at end of file