diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d9df79..ff7ae33 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v1.5.3
+
+- (#206) Added python-pynautobot version to default headers.
+
 ## v1.5.2
 
 - (#174) Fixes for authentication change in Nautobot.
diff --git a/pyproject.toml b/pyproject.toml
index fe50e6a..c0c197a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 
 [tool.poetry]
 name = "pynautobot"
-version = "1.5.2"
+version = "1.5.3"
 description = "Nautobot API client library"
 authors = ["Network to Code, LLC <opensource@networktocode.com>"]
 readme = "README.md"