diff --git a/.gitignore b/.gitignore
index 2463ea3..cd1f86d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -87,9 +87,6 @@ target/
 profile_default/
 ipython_config.py
 
-# pyenv
-.python-version
-
 # pipenv
 #   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
 #   However, in case of collaboration, if having platform-specific dependencies or dependencies
diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..24ee5b1
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.13
diff --git a/README.md b/README.md
index 030d687..bf664b8 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,18 @@ PRETALX__BASE_URL=https://your-pretalx-instance.com
 PRETALX__API_TOKEN=your-pretalx-api-token
 ```
 
+## 🔧 Troubleshooting
+
+### Installation Issues with brotli or psycopg-binary
+
+If you encounter build errors when installing dependencies (particularly with `brotli` or `psycopg-binary`), you may need to install system-level dependencies first:
+
+```bash
+sudo apt-get update && sudo apt-get install -y build-essential libpq-dev
+```
+
+This installs the necessary build tools and PostgreSQL development libraries required to compile these packages.
+
 ## 🎨 Frontend Development
 
 This project uses Tailwind CSS with DaisyUI for styling: