diff --git a/python-xarray.changes b/python-xarray.changes
index 40e0838..ec347a4 100644
--- a/python-xarray.changes
+++ b/python-xarray.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Sep 21 10:38:39 UTC 2021 - Ben Greiner <code@bnavigator.de>
+
+- Tests require dask[diagnostics] extra now (for Jinja2)
+
 -------------------------------------------------------------------
 Tue Jul 27 11:01:52 UTC 2021 - Sebastian Wagner <sebix+novell.com@sebix.at>
 
diff --git a/python-xarray.spec b/python-xarray.spec
index c4cc84a..7ff7b55 100644
--- a/python-xarray.spec
+++ b/python-xarray.spec
@@ -69,6 +69,7 @@ Suggests:       python-cfgrib
 #/SECTION
 # SECTION tests
 BuildRequires:  %{python_module dask-dataframe}
+BuildRequires:  %{python_module dask-diagnostics}
 BuildRequires:  %{python_module pooch}
 BuildRequires:  %{python_module pytest-xdist}
 BuildRequires:  %{python_module pytest}