diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0922f513dc..2b9bd69c2f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [1.5.1](https://github.com/locustio/locust/tree/1.5.1) (2021-05-04)
+
+[Full Changelog](https://github.com/locustio/locust/compare/1.5.0...1.5.1)
+
+**Merged pull requests:**
+
+- remove accidentally added start\_time parameter to request event [\#1754](https://github.com/locustio/locust/pull/1754) ([cyberw](https://github.com/cyberw))
+
 ## [1.5.0](https://github.com/locustio/locust/tree/1.5.0) (2021-05-04)
 
 [Full Changelog](https://github.com/locustio/locust/compare/1.4.4...1.5.0)
diff --git a/docs/changelog.rst b/docs/changelog.rst
index d22655befb..fd4b2e3837 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -4,6 +4,11 @@ Changelog Highlights
 
 For full details of the Locust changelog, please see https://github.com/locustio/locust/blob/master/CHANGELOG.md
 
+1.5.1
+=====
+
+* Fixed an issue with 1.5.0 where an extra parameter (start_time) was passed to request event https://github.com/locustio/locust/pull/1754
+
 1.5.0
 =====
 
diff --git a/locust/__init__.py b/locust/__init__.py
index 65d419b0b4..1644414c74 100644
--- a/locust/__init__.py
+++ b/locust/__init__.py
@@ -13,7 +13,7 @@
 
 events = Events()
 
-__version__ = "1.5.0"
+__version__ = "1.5.1"
 __all__ = (
     "SequentialTaskSet",
     "wait_time",