diff --git a/.gitignore b/.gitignore
index 00513ff..baf9eea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -50,3 +50,4 @@
 /dask-2021.8.1.tar.gz
 /dask-2021.9.0.tar.gz
 /dask-2021.9.1.tar.gz
+/dask-2021.12.0.tar.gz
diff --git a/python-dask.spec b/python-dask.spec
index aa634ef..55689e6 100644
--- a/python-dask.spec
+++ b/python-dask.spec
@@ -6,13 +6,13 @@
 %bcond_without bootstrap
 
 Name:           python-%{srcname}
-Version:        2021.9.1
+Version:        2021.12.0
 Release:        %autorelease
 Summary:        Parallel PyData with Task Scheduling
 
 License:        BSD
 URL:            https://github.com/dask/dask/
-Source0:        %pypi_source
+Source0:        https://github.com/dask/dask/archive/%{version}/%{srcname}-%{version}.tar.gz
 # https://github.com/dask/dask/issues/6725
 Patch0001:      0001-Skip-test_encoding_gh601-on-big-endian-machines.patch
 
diff --git a/sources b/sources
index b4bde1d..c82e477 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (dask-2021.9.1.tar.gz) = 20beca3f68c2e21d54c941049a1f352e19fcce7b5f7ecf84abf60cfb9979551a3e83938ca5439b662d35c0b64b26d726f6fea85641e737d0060c56a2e879755e
+SHA512 (dask-2021.12.0.tar.gz) = e9ce4613bf1ccfda7ce85bd90ff8f24d59335f02a941c12335214a2636f46ae1e1e8c2b1777ca9b9dd83f190071a2893b02bee129a68e9b7468c30f2a45df68e