diff --git a/CHANGELOG.md b/CHANGELOG.md
index fcd11c30e60..fe4557c8256 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## UNRELEASED
+
+### Added
+
+  - `pattern_shape` options now available in `px.timeline()`
+
 ## [5.8.2] - 2022-06-10
 
 ### Fixed
diff --git a/packages/python/plotly/plotly/express/_chart_types.py b/packages/python/plotly/plotly/express/_chart_types.py
index 9707bd08dc1..f7b0d7b88ab 100644
--- a/packages/python/plotly/plotly/express/_chart_types.py
+++ b/packages/python/plotly/plotly/express/_chart_types.py
@@ -387,6 +387,7 @@ def timeline(
     x_end=None,
     y=None,
     color=None,
+    pattern_shape=None,
     facet_row=None,
     facet_col=None,
     facet_col_wrap=0,
@@ -402,6 +403,8 @@ def timeline(
     labels=None,
     color_discrete_sequence=None,
     color_discrete_map=None,
+    pattern_shape_sequence=None,
+    pattern_shape_map=None,
     color_continuous_scale=None,
     range_color=None,
     color_continuous_midpoint=None,