diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1a7af7a..d0e33be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.18.0] - 2022-12-13
+
+### Changed
+
+- Remove `tests` folder from python package
+- Close all files which are opened by the ldfparser
+
 ## [0.17.0] - 2022-10-17
 
 ### Added
diff --git a/ldfparser/parser.py b/ldfparser/parser.py
index 0131fad..9b78431 100644
--- a/ldfparser/parser.py
+++ b/ldfparser/parser.py
@@ -24,12 +24,15 @@ def parse_ldf_to_dict(path: str, capture_comments: bool = False, encoding: str =
     :type encoding: str
     """
     comments = []
-    lark = os.path.abspath(os.path.join(os.path.dirname(__file__), 'grammars', 'ldf.lark'))
-    parser = Lark(grammar=open(lark), parser='lalr', lexer_callbacks={
+    lark_file = os.path.abspath(os.path.join(os.path.dirname(__file__), 'grammars', 'ldf.lark'))
+    with open(lark_file, "r", encoding=encoding) as lark_file:
+        grammar = lark_file.read()
+    parser = Lark(grammar=grammar, parser='lalr', lexer_callbacks={
         'C_COMMENT': comments.append,
         'CPP_COMMENT': comments.append
     }, propagate_positions=True)
-    ldf_file = open(path, "r", encoding=encoding).read()
+    with open(path, "r", encoding=encoding) as input_file:
+        ldf_file = input_file.read()
     tree = parser.parse(ldf_file)
     json = LdfTransformer().transform(tree)
 
diff --git a/setup.cfg b/setup.cfg
index 1fb6010..0def4c5 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,2 +1,2 @@
 [metadata]
-version = 0.17.0
+version = 0.18.0
diff --git a/setup.py b/setup.py
index 102ff66..f584453 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
     long_description=long_description,
     long_description_content_type="text/markdown",
     url="https://github.com/c4deszes/ldfparser",
-    packages=find_packages(),
+    packages=find_packages(exclude=["tests"]),
     package_data={'': ['*.lark']},
     license='MIT',
     keywords=['LIN', 'LDF'],