diff --git a/docs/en/source/cif2x/about/index.rst b/docs/en/source/cif2x/about/index.rst
index 26f19b2..2c8d16a 100644
--- a/docs/en/source/cif2x/about/index.rst
+++ b/docs/en/source/cif2x/about/index.rst
@@ -49,6 +49,9 @@ This software was developed by the following contributors.
 Release history
 ----------------------------------------------------------------
 
+  ver.1.1.0
+    Released on 2024/09/14
+
   ver.1.0.1
     Released on 2024/03/31
 
diff --git a/docs/ja/source/cif2x/about/index.rst b/docs/ja/source/cif2x/about/index.rst
index c5c9025..5f07233 100644
--- a/docs/ja/source/cif2x/about/index.rst
+++ b/docs/ja/source/cif2x/about/index.rst
@@ -56,7 +56,7 @@ cif2xは、cifファイルから第一原理計算用の入力ファイルを生
 ----------------------------------------------------------------
 
   ver.1.1.0
-    2024/09/09 リリース
+    2024/09/14 リリース
 
   ver.1.0.1
     2024/03/31 リリース
diff --git a/src/cif2x/__init__.py b/src/cif2x/__init__.py
index 5c4105c..6849410 100644
--- a/src/cif2x/__init__.py
+++ b/src/cif2x/__init__.py
@@ -1 +1 @@
-__version__ = "1.0.1"
+__version__ = "1.1.0"
diff --git a/src/getcif/__init__.py b/src/getcif/__init__.py
index c6c636c..a474024 100644
--- a/src/getcif/__init__.py
+++ b/src/getcif/__init__.py
@@ -4,7 +4,7 @@
 from .main import QueryMaterialsProject
 
 try:
-    __version__ = version("htp-tools-getcif")
+    __version__ = version("HTP-tools-cif2x")
 except PackageNotFoundError:
     # package not installed
     pass