diff --git a/CHANGELOG.md b/CHANGELOG.md
index 02d69902..47079b56 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 <!--next-version-placeholder-->
 
+## v1.36.1 (2024-02-22)
+
+### Fix
+
+* Bug in `_get_timedelta_frame` if timestamp col names were the same ([`3ade969`](https://github.com/Aarhus-Psychiatry-Research/timeseriesflattener/commit/3ade969b3db28aba52690afefa855b8cc8c9cc2f))
+* **#480:** Pure NaNs when flattening with lookbehind-tuple in 01_basic ([`6d1122b`](https://github.com/Aarhus-Psychiatry-Research/timeseriesflattener/commit/6d1122be2a25cbd726536ac92061156fd7a9a0b4))
+
 ## v1.36.0 (2024-02-22)
 
 ### Feature
diff --git a/pyproject.toml b/pyproject.toml
index dbbcc19b..3970bdfc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "timeseriesflattener"
-version = "1.36.0"
+version = "1.36.1"
 authors = [
   { name = "Lasse Hansen", email = "lasseh0310@gmail.com" },
   { name = "Jakob Grøhn Damgaard", email = "bokajgd@gmail.com" },