diff --git a/pyproject.toml b/pyproject.toml
index 169146e..04e9b65 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,3 +32,7 @@ pygitver = "pygitver.pygitver:main"
 
 [metadata]
 url = "https://github.com/panpuchkov/pygitver"
+
+
+[tool.setuptools.package-data]
+pygitver = ["*.py", "*.tmpl"]
diff --git a/src/pygitver/changelogs_mngr.py b/src/pygitver/changelogs_mngr.py
index dcc2f48..991d1ed 100644
--- a/src/pygitver/changelogs_mngr.py
+++ b/src/pygitver/changelogs_mngr.py
@@ -1,4 +1,5 @@
 import os
+import pathlib
 import json
 from pygitver.git import Git, GitError
 
@@ -51,9 +52,10 @@ def read_files(self, path: str, file_ext: str = "json"):
 
     def generate(self, template_name: str = "") -> str:
         if not template_name:
+            script_directory = pathlib.Path(__file__).parent.resolve()
             template_name = os.getenv(
                 "PYGITVER_TEMPLATE_CHANGELOG_COMMON",
-                "pygitver/templates/changelog-common.tmpl",
+                f"{script_directory}/templates/changelog-common.tmpl",
             )
         try:
             env = Environment(loader=FileSystemLoader(os.path.dirname(template_name)))
diff --git a/src/pygitver/git.py b/src/pygitver/git.py
index 9c420a6..40fc0e3 100644
--- a/src/pygitver/git.py
+++ b/src/pygitver/git.py
@@ -1,5 +1,6 @@
-import json
 import os
+import pathlib
+import json
 import re
 import subprocess
 from jinja2 import Environment, FileSystemLoader, TemplateNotFound
@@ -252,8 +253,10 @@ def changelog_generate(changelog_group: dict, template_name: str = "") -> str:
         :return: string with formatted changelog
         """
         if not template_name:
+            script_directory = pathlib.Path(__file__).parent.resolve()
             template_name = os.getenv(
-                "PYGITVER_TEMPLATE_CHANGELOG", "templates/changelog.tmpl"
+                "PYGITVER_TEMPLATE_CHANGELOG",
+                f"{script_directory}/templates/changelog.tmpl",
             )
         try:
             env = Environment(loader=FileSystemLoader(os.path.dirname(template_name)))