diff --git a/CHANGELOG.md b/CHANGELOG.md
index ade861023..8d3f5ff6b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+### 41.5.6 [#1223](https://github.com/openfisca/openfisca-core/pull/1223)
+
+#### Technical changes
+
+- Update `pendulum'
+- Remove run-time type-checks
+- Add typing to the periods module
+
 ### 41.5.5 [#1220](https://github.com/openfisca/openfisca-core/pull/1220)
 
 #### Technical changes
diff --git a/setup.py b/setup.py
index 6707ce9c6..d62443e9e 100644
--- a/setup.py
+++ b/setup.py
@@ -67,7 +67,7 @@
 
 setup(
     name="OpenFisca-Core",
-    version="41.5.5",
+    version="41.5.6",
     author="OpenFisca Team",
     author_email="contact@openfisca.org",
     classifiers=[