diff --git a/ipykernel-6.3.1.tar.gz b/ipykernel-6.3.1.tar.gz
deleted file mode 100644
index c8e8830..0000000
--- a/ipykernel-6.3.1.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6dd4b107ab755ed9286c820b2f69c2cd895046ef2a25c878929ac8b5540477a1
-size 120310
diff --git a/ipykernel-6.4.1.tar.gz b/ipykernel-6.4.1.tar.gz
new file mode 100644
index 0000000..bb39e76
--- /dev/null
+++ b/ipykernel-6.4.1.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df3355e5eec23126bc89767a676c5f0abfc7f4c3497d118c592b83b316e8c0cd
+size 120971
diff --git a/python-ipykernel.changes b/python-ipykernel.changes
index 19f683e..cf3246d 100644
--- a/python-ipykernel.changes
+++ b/python-ipykernel.changes
@@ -1,3 +1,27 @@
+-------------------------------------------------------------------
+Wed Sep 15 05:29:16 UTC 2021 - Arun Persaud <arun@gmx.de>
+
+- specfile:
+  * require debugpy for build
+
+- update to version 6.4.1:
+  * Merged PRs
+    + debugpy is now a build requirement #773 (@minrk)
+
+- changes from version 6.4.0:
+  * Enhancements made
+    + Make json_clean a no-op for jupyter-client >= 7 #708
+      (@martinRenou)
+  * Bugs fixed
+    + Do not assume kernels have loops #766 (@Carreau)
+    + Fix undefined variable #765 (@martinRenou)
+  * Maintenance and upkeep improvements
+    + Make ipykernel work without debugpy #767 (@frenzymadness)
+    + Stop using deprecated recv_multipart when using in-process
+      socket. #762 (@Carreau)
+    + Update some warnings with instructions and version number. #761
+      (@Carreau)
+
 -------------------------------------------------------------------
 Mon Sep  6 11:20:30 UTC 2021 - Ben Greiner <code@bnavigator.de>
 
diff --git a/python-ipykernel.spec b/python-ipykernel.spec
index cf51546..4ed1c8c 100644
--- a/python-ipykernel.spec
+++ b/python-ipykernel.spec
@@ -20,7 +20,7 @@
 %define         skip_python2 1
 %define         skip_python36 1
 Name:           python-ipykernel
-Version:        6.3.1
+Version:        6.4.1
 Release:        0
 Summary:        IPython Kernel for Jupyter
 License:        BSD-3-Clause
@@ -28,6 +28,7 @@ Group:          Development/Languages/Python
 URL:            https://github.com/ipython/ipykernel
 Source:         https://files.pythonhosted.org/packages/source/i/ipykernel/ipykernel-%{version}.tar.gz
 BuildRequires:  %{python_module base >= 3.7}
+BuildRequires:  %{python_module debugpy}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
 BuildRequires:  hicolor-icon-theme
@@ -51,11 +52,11 @@ Provides:       %{python_module jupyter_ipykernel-doc = %{version}}
 Obsoletes:      %{python_module jupyter_ipykernel-doc < %{version}}
 Provides:       %{python_module jupyter-ipykernel-doc = %{version}}
 Obsoletes:      %{python_module jupyter-ipykernel-doc < %{version}}
+BuildArch:      noarch
 %if "%{python_flavor}" == "python3" || "%{python_provides}" == "python3"
 Provides:       jupyter-ipykernel = %{version}-%{release}
 Obsoletes:      jupyter-ipykernel < %{version}-%{release}
 %endif
-BuildArch:      noarch
 # SECTION test requirements
 BuildRequires:  %{python_module debugpy >= 1.0.0}
 BuildRequires:  %{python_module flaky}
@@ -90,7 +91,7 @@ rm ipykernel/tests/test_pickleutil.py
 
 %install
 %python_install
-%if %suse_version >= 1550
+%if 0%{?suse_version} >= 1550
 %{python_expand # install kernelspecs for each flavor
 PYTHONPATH=%{buildroot}%{$python_sitelib}
 $python -m ipykernel install \
@@ -99,7 +100,7 @@ $python -m ipykernel install \
     --display-name 'Python %{$python_bin_suffix} (ipykernel)'
 }
 # use the symlink for the default python3 flavor
-sed -i "s|$(readlink -f %{__python3})|%{__python3}|" %{buildroot}%{_jupyter_kernel_dir}/python3/kernel.json
+sed -i "s|$(readlink -f python3)|python3|" %{buildroot}%{_jupyter_kernel_dir}/python3/kernel.json
 %endif
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
@@ -113,7 +114,7 @@ sed -i "s|$(readlink -f %{__python3})|%{__python3}|" %{buildroot}%{_jupyter_kern
 %{python_sitelib}/ipykernel_launcher.py
 %{python_sitelib}/ipykernel-%{version}-py*.egg-info
 %pycache_only %{python_sitelib}/__pycache__/*.pyc
-%if %suse_version >= 1550
+%if 0%{?suse_version} >= 1550
 %{_jupyter_kernel_dir}/python%{python_bin_suffix}
 %endif
 %if "%{python_flavor}" == "python3" || "%{python_provides}" == "python3"