diff --git a/.gitignore b/.gitignore
index b584206..5978c2e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,5 +5,6 @@ __pycache__
 /src/*.egg-info/*
 /dist/*
 .vscode
+.mypy_cache
 .pytest_cache
 tests/autogenerated_*.py
\ No newline at end of file
diff --git a/CITATION.cff b/CITATION.cff
index 4b4b0d8..08eb6cf 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -8,8 +8,8 @@ authors:
     affiliation: "German Aerospace Center (DLR)"
     address: "Linder Höhe"
     city: Köln
-version: 0.11.2
-date-released: "2025-04-01"
+version: 1.0.0
+date-released: "2025-05-09"
 #identifiers:
 #  - description: This is the collection of archived snapshots of all versions of Gaspype
 #    type: doi
diff --git a/pyproject.toml b/pyproject.toml
index 6cce0ca..1ab237d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "gaspype"
-version = "0.0.1"
+version = "1.0.0"
 authors = [
   { name="Nicolas Kruse", email="nicolas.kruse@dlr.de" },
 ]
@@ -38,6 +38,7 @@ dev = [
     "mypy",
     "pytest",
     "pandas",
+    "types-PyYAML"
 ]
 
 [tool.mypy]