diff --git a/Changelog.rst b/Changelog.rst
index 0243323e32..e62e85d31b 100644
--- a/Changelog.rst
+++ b/Changelog.rst
@@ -1,7 +1,7 @@
 version 3.13.1
 --------------
 
-**2022-06-24**
+**2022-??-??**
 
 * Fix bug when setting coordinate bounds with different units to their
   parent coordinates
diff --git a/cf/__init__.py b/cf/__init__.py
index c9d327e2d1..e70621265c 100644
--- a/cf/__init__.py
+++ b/cf/__init__.py
@@ -74,7 +74,7 @@
 
 """
 __Conventions__ = "CF-1.9"
-__date__ = "2022-06-24"
+__date__ = "2022-??-??"
 __version__ = "3.13.1"
 
 _requires = (