diff --git a/doc/changelog.md b/doc/changelog.md
index 87e4d5ab..ce470e95 100644
--- a/doc/changelog.md
+++ b/doc/changelog.md
@@ -4,9 +4,9 @@
 
 ## Jan-12-2024: Version 3.11.1
 
-
 - `-i`, `-o`, `--io` options have been deprecated.
-- `--amplitude` option has been activated for `phono3py-load`.
+- The `--amplitude` option can now be used to specify the displacement distance
+  for `phono3py-load --pypolymlp`.
 
 ## Jan-2-2024: Version 3.11.0
 
diff --git a/doc/conf.py b/doc/conf.py
index 946af04e..2f6a6cfb 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -60,7 +60,7 @@
 # The short X.Y version.
 version = "3.11"
 # The full version, including alpha/beta/rc tags.
-release = "3.11.0"
+release = "3.11.1"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.