diff --git a/README.md b/README.md
index b62cbf7..29ce960 100644
--- a/README.md
+++ b/README.md
@@ -21,15 +21,19 @@ be available for use in your Python environment as `prototorch.models`.
 ## Contribution
 
 This repository contains definition for [git hooks](https://githooks.com).
-[Pre-commit](https://pre-commit.com) gets installed as development dependency with prototorch.
-Please install the hooks by running
+[Pre-commit](https://pre-commit.com) is automatically installed as development
+dependency with prototorch or you can install it manually with `pip install
+pre-commit`.
+
+Please install the hooks by running:
 ```bash
 pre-commit install
 pre-commit install --hook-type commit-msg
 ```
 before creating the first commit.
 
-
+The commit will fail if the commit message does not follow the specification
+provided [here](https://www.conventionalcommits.org/en/v1.0.0/#specification).
 
 ## Available models
 
diff --git a/setup.py b/setup.py
index cef77a1..451ec1b 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@ with open("README.md", "r") as fh:
     long_description = fh.read()
 
 INSTALL_REQUIRES = [
-    "prototorch>=0.5.0",
+    "prototorch>=0.5.0,<0.6.0",
     "pytorch_lightning>=1.3.5",
     "torchmetrics",
 ]
@@ -63,7 +63,7 @@ setup(
     url=PROJECT_URL,
     download_url=DOWNLOAD_URL,
     license="MIT",
-    python_requires=">=3.8",
+    python_requires=">=3.9",
     install_requires=INSTALL_REQUIRES,
     extras_require={
         "dev": DEV,
@@ -79,7 +79,6 @@ setup(
         "Intended Audience :: Science/Research",
         "License :: OSI Approved :: MIT License",
         "Natural Language :: English",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Operating System :: OS Independent",
         "Topic :: Scientific/Engineering :: Artificial Intelligence",