diff --git a/doc/changelog.md b/doc/changelog.md
index 71a671f2..4faa2c1f 100644
--- a/doc/changelog.md
+++ b/doc/changelog.md
@@ -2,6 +2,10 @@
 
 # Change Log
 
+## Nov-3-2024: Version 3.6.0
+
+- Maintenance release.
+
 ## Sep-24-2024: Version 3.5.2
 
 - Fix a memory leak.
diff --git a/doc/conf.py b/doc/conf.py
index f186e32a..2f64b5f2 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -58,9 +58,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = "3.5"
+version = "3.6"
 # The full version, including alpha/beta/rc tags.
-release = "3.5.2"
+release = "3.6.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/phono3py/version.py b/phono3py/version.py
index d4df8bf1..ea0e6101 100644
--- a/phono3py/version.py
+++ b/phono3py/version.py
@@ -34,4 +34,4 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
-__version__ = "3.5.2"
+__version__ = "3.6.0"