diff --git a/CHANGES.rst b/CHANGES.rst
index e3f16e1..7e3c063 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,8 @@
+Revision 1.5.3, released on Oct 14, 2024
+----------------------------------------
+
+- Fixed a runtime error in pysnmp.
+
 Revision 1.5.2, released on Oct 14, 2024
 ----------------------------------------
 
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 76b7366..6217a4f 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -69,7 +69,7 @@
 # The short X.Y version.
 version = "1.5"
 # The full version, including alpha/beta/rc tags.
-release = "1.5.2"
+release = "1.5.3"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/pyproject.toml b/pyproject.toml
index 8b677c6..91e46a3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pysmi"
-version = "1.5.2"
+version = "1.5.3"
 description = "A pure-Python implementation of SNMP/SMI MIB parsing and conversion library."
 authors = ["Ilya Etingof <etingof@gmail.com>", "LeXtudio Inc. <support@lextudio.com>"]
 license = "BSD-2-Clause"
diff --git a/pysmi/__init__.py b/pysmi/__init__.py
index 37480da..4827911 100644
--- a/pysmi/__init__.py
+++ b/pysmi/__init__.py
@@ -1,2 +1,2 @@
 # http://www.python.org/dev/peps/pep-0396/
-__version__ = "1.5.2"
+__version__ = "1.5.3"