diff --git a/mise.toml b/mise.toml
index 7592ec1..ffbd3a8 100644
--- a/mise.toml
+++ b/mise.toml
@@ -1,5 +1,6 @@
 [env]
 '_'.python.venv = { path = ".venv", create = true }
+DATABASE_URL = "sqlite:///database.db"
 
 [tools]
 markdownlint-cli2 = "latest"
diff --git a/src/teilchensammler_cli/database.py b/src/teilchensammler_cli/database.py
index d919349..e226215 100644
--- a/src/teilchensammler_cli/database.py
+++ b/src/teilchensammler_cli/database.py
@@ -1,6 +1,8 @@
+import os
 from sqlmodel import SQLModel, create_engine
 
-sqlite_url = "sqlite:///database.db"  # TODO: get url from environment
+
+sqlite_url = os.environ.get("DATABASE_URL", "sqlite:///database.db")
 engine = create_engine(sqlite_url, echo=True)