diff --git a/README.md b/README.md
index 956f929..bbb630c 100755
--- a/README.md
+++ b/README.md
@@ -123,6 +123,9 @@ pip install pyatmos --upgrade # to upgrade a pre-existing installation
 ```
 
 ## Change log
+
+- **1.2.7 — Nov 05, 2024**
+  - By dynamically setting environment variables *ENABLE_IERS_LOAD*, the problem of repeatedly loading IERS data files when other packages call this package is fixed.
 - **1.2.6 — Mar 08, 2024**
   - Implemented the calculation of Associated Legendre polynomials using `scipy`, eliminating the dependency on the `pyshtools` package.
 - **1.2.5 — Jul 16, 2023**
diff --git a/pyatmos/.DS_Store b/pyatmos/.DS_Store
index 6fc0733..33b4ead 100644
Binary files a/pyatmos/.DS_Store and b/pyatmos/.DS_Store differ
diff --git a/setup.py b/setup.py
index ee9059a..36d652a 100755
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import setup,find_packages
 
 setup(
     name = 'pyatmos',
-    version = '1.2.6',
+    version = '1.2.7',
     description = 'A package to estimate the vertical structure of atmosphere with various atmospheric density models',
     author = 'Chunxiao Li',
     author_email = 'lcx366@126.com',