diff --git a/debian/changelog b/debian/changelog
index 699d0f8..6a7739a 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+votca-xtp (1.6.4-2) UNRELEASED; urgency=medium
+
+  * Trim trailing whitespace.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Sat, 06 Mar 2021 18:45:29 -0000
+
 votca-xtp (1.6.4-1) unstable; urgency=medium
 
   * New upstream release.
@@ -8,7 +14,7 @@
 
   * New upstream release.
   * Make cross Build-Depends satisfiably annotate python3 with :any.
-  * Update Standards-Version to 4.5.1, no changes required. 
+  * Update Standards-Version to 4.5.1, no changes required.
 
  -- Nicholas Breen <nbreen@debian.org>  Sun, 13 Dec 2020 10:59:37 -0800
 
@@ -22,7 +28,7 @@
 
 votca-xtp (1.6.2-1) unstable; urgency=medium
 
-  * New upstream release. 
+  * New upstream release.
 
  -- Nicholas Breen <nbreen@debian.org>  Sat, 17 Oct 2020 16:03:03 -0700