diff --git a/LICENSE b/LICENSE
index 1637db2..e1fd273 100755
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2021
+Copyright (c) 2023
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/changelog.md b/changelog.md
index a9d11b5..2da3c73 100755
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,7 @@
+# 1.2.5
+
+- Fix: a specific version of ruamel.yaml was used
+
 # 1.2.4
 
 - New utils module.
diff --git a/setup.py b/setup.py
index d13d508..2870b8d 100755
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
     description=SHORT_DESCRIPTION,
     long_description=LONG_DESCRIPTION,
     long_description_content_type='text/markdown',
-    version='1.2.4',
+    version='1.2.5',
     author='Daniil Minukhin',
     author_email='ddddsa@gmail.com',
     packages=['foliant.preprocessors.swaggerdoc'],
@@ -26,7 +26,7 @@
     install_requires=[
         'foliant>=1.0.5',
         'jinja2',
-        'ruamel.yaml',
+        'ruamel.yaml==0.17.40',
         'foliantcontrib.utils>=1.0.2',
     ],
     classifiers=[