diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13fc89f..dbba3d0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,18 @@
 
 This changelog is deprecated. All changes are documented under [releases](https://github.com/equinor/tagreader-python/releases).
 
+## [5.1.2](https://github.com/equinor/tagreader-python/compare/v5.1.1...v5.1.2) (2023-12-05)
+
+### 🧹 Chores
+
+* ensure that the repo is in accordance with Equinor guidelines for open-source projects ([9469c22](https://github.com/equinor/tagreader-python/commit/9469c22abcc88d5ba72af406ab45cff99b548276))
+* chore: avoid trying to add Statoil certificate if Equinor Root CA is already found
+* chore: avoid default caching web ids in PiHandlerWeb
+* chore: allow numpy integers and floats as timedelta arguments and add timeout to search method
+
+### 🐛 Bug Fixes
+* fix: allow None-timedelta when reading Snapshots or Raw data
+
 ## [5.1.1](https://github.com/equinor/tagreader-python/compare/v5.1.0...v5.1.1) (2023-12-05)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 82973b1..13d67b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "tagreader"
-version = "5.1.1"
+version = "5.1.2"
 description = "Tagreader is a Python package for reading trend data from the OSIsoft PI and Aspen Infoplus.21 IMS systems."
 authors = ["Einar S. Idsø <eiids@equinor.com>", "Morten Dæhli Aslesen <masl@equinor.com"]
 license = "MIT"