diff --git a/CHANGELOG.md b/CHANGELOG.md
index 84a77606..e0be83ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,13 @@ Changes for the upcoming release can be found in [changelog.d](https://github.co
 
 <!-- scriv-insert-here -->
 
+<a id='changelog-5.2.1'></a>
+## 5.2.1 (2024-02-19)
+
+### Bug fixes
+
+- Fix the return type of `safir.datetime.parse_isodatetime` to not include `None` since the function never returns `None`.
+
 <a id='changelog-5.2.0'></a>
 ## 5.2.0 (2024-01-19)
 
diff --git a/changelog.d/20240219_113514_rra_DM_42937.md b/changelog.d/20240219_113514_rra_DM_42937.md
deleted file mode 100644
index 068e0db9..00000000
--- a/changelog.d/20240219_113514_rra_DM_42937.md
+++ /dev/null
@@ -1,3 +0,0 @@
-### Bug fixes
-
-- Fix the return type of `safir.datetime.parse_isodatetime` to not include `None` since the function never returns `None`.