diff --git a/debian/changelog b/debian/changelog
index 8ba5fe50..9eb0010c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+mdanse (2.0.1-3) UNRELEASED; urgency=medium
+
+  * Team upload.
+  * Build python3-mdanse as arch:all
+  * Add patch to relax the test tolerance
+
+ -- Maximiliano Curia <maxy@debian.org>  Fri, 18 Sep 2026 11:46:02 +0200
+
 mdanse (2.0.1-2) unstable; urgency=medium
 
   * Fix d/copyright syntax.
diff --git a/debian/control b/debian/control
index 534e72f7..9b5208e9 100644
--- a/debian/control
+++ b/debian/control
@@ -7,11 +7,9 @@ Section: science
 Build-Depends:
  debhelper-compat (= 13),
  dh-sequence-python3,
- cython3,
  dbus-daemon <!nocheck>,
  pybuild-plugin-pyproject,
  python3-all,
- python3-all-dev,
  python3-ase <!nocheck>,
  python3-h5py <!nocheck>,
  python3-mdanalysis,
@@ -33,12 +31,11 @@ Vcs-Git: https://salsa.debian.org/science-team/mdanse.git
 
 Package: python3-mdanse
 Section: python
-Architecture: any
+Architecture: all
 Depends:
  python3-rdkit (>= 202503.1-5~),
  ${misc:Depends},
  ${python3:Depends},
- ${shlibs:Depends},
  python3-vtk9,
 Description: Molecular Dynamics Analysis for Neutron Scattering Experiments
  This is the module containing the command-line utilities and
diff --git a/debian/patches/relax-test-tolerance.patch b/debian/patches/relax-test-tolerance.patch
new file mode 100644
index 00000000..4624547f
--- /dev/null
+++ b/debian/patches/relax-test-tolerance.patch
@@ -0,0 +1,19 @@
+Description: Relax tolerance for DynamicCoherentStructureFactor test
+ On architectures such as arm64, floating point differences cause a maximum
+ absolute difference of ~1.1e-5 in the ideal DCSF dataset, which slightly
+ exceeds the atol=1e-5 tolerance. Relax atol to 2e-5.
+Author: Maximiliano Curia <maxy@debian.org>
+Forwarded: no
+Last-Update: 2026-09-18
+
+--- a/MDANSE/Tests/UnitTests/Analysis/test_grouping.py
++++ b/MDANSE/Tests/UnitTests/Analysis/test_grouping.py
+@@ -113,7 +113,7 @@
+         ("PairDistributionFunction", ["pdf", "rdf", "tcf"], "equal", 1e-10, 1e-7),
+         ("StaticStructureFactor", ["ssf"], "equal", 1e-10, 1e-7),
+         ("XRayStaticStructureFactor", ["xssf"], "equal", 1e-10, 1e-7),
+-        ("DynamicCoherentStructureFactor", ["dcsf"], "b_coherent", 1e-5, 1e-4),
++        ("DynamicCoherentStructureFactor", ["dcsf"], "b_coherent", 2e-5, 1e-4),
+         ("CurrentCorrelationFunction", ["ccf"], "b_coherent", 1e-6, 1e-7),
+         ("DynamicIncoherentStructureFactor", ["disf"], "b_incoherent", 1e-10, 1e-7),
+         ("ElasticIncoherentStructureFactor", ["eisf"], "b_incoherent", 1e-10, 1e-7),
diff --git a/debian/patches/series b/debian/patches/series
new file mode 100644
index 00000000..cab0e035
--- /dev/null
+++ b/debian/patches/series
@@ -0,0 +1 @@
+relax-test-tolerance.patch