diff --git a/control-0.9.0.tar.gz b/control-0.9.0.tar.gz
deleted file mode 100644
index c40626a..0000000
--- a/control-0.9.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:34eeca077cf002a2f22a9334c8998ec5b3bcc0fdae2aac790a923cf8bc80245a
-size 339120
diff --git a/control-0.9.1.tar.gz b/control-0.9.1.tar.gz
new file mode 100644
index 0000000..dd301db
--- /dev/null
+++ b/control-0.9.1.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8c9084bf386eafcf5d74008f780fae6dec68d243d18a380c866ac10a3549f8d3
+size 357890
diff --git a/python-control.changes b/python-control.changes
index 1e1a999..b6f0d31 100644
--- a/python-control.changes
+++ b/python-control.changes
@@ -1,3 +1,85 @@
+-------------------------------------------------------------------
+Fri Dec 31 18:27:11 UTC 2021 - Ben Greiner <code@bnavigator.de>
+
+- Update to version 0.9.1 
+  * Version 0.9.1 is a minor release that includes new
+    functionality for discrete time systems (dlqr, dlqe, drss),
+    flat systems (optimization and constraints), a new time
+    response data class, and many individual improvements and bug
+    fixes.
+  **New features:**
+  * Add optimization to flat systems trajectory generation (#569 by
+    murrayrm)
+  * Return a discrete time system with drss() (#589 by bnavigator)
+  * A first implementation of the singular value plot (#593 by
+    forgi86)
+  * Include InfValue into settling min/max calculation for
+    step_info (#600 by bnavigator)
+  * New time response data class (#649 by murrayrm)
+  * Check for unused subsystem signals in InterconnectedSystem
+    (#652 by roryyorke)
+  * New PID design function built on sisotool (#662 by
+    sawyerbfuller)
+  * Modify discrete-time contour for Nyquist plots to indent around
+    poles (#668 by sawyerbfuller)
+  * Additional I/O system type conversions (#672 by murrayrm)
+  * Remove Python 2.7 support and leverage @ operator (#679 by
+    bnavigator)
+  * Discrete time LQR and LQE (#670 by sawyerbfuller, murrayrm)
+  **Improvements, bug fixes:**
+  * Change step_info undershoot percentage calculation (#590 by
+    juanodecc)
+  * IPython LaTeX output only generated for small systems (#607 by
+    roryyorke)
+  * Fix warnings generated by sisotool (#608 by roryyorke)
+  * Discrete time LaTeX repr of StateSpace systems (#609 by
+    bnavigator)
+  * Updated rlocus.py to remove warning by sisotool() with
+    rlocus_grid=True (#616 by nirjhar-das)
+  * Refine automatic contour determination in Nyquist plot (#620 by
+    bnavigator)
+  * Fix damp method for discrete time systems with a negative
+    real-valued pole (#647 by vincentchoqueuse)
+  * Plot Nyquist frequency correctly in Bode plot in Hz (#651 by
+    murrayrm)
+  * Return frequency response for 0 and 1-state systems directly
+    (#663 by bnavigator)
+  * Fixed prewarp not working in c2d and sample_system, margin
+    docstring improvements (#669 by sawyerbfuller)
+  * Improved lqe calling functionality (#673 by murrayrm)
+  * Vectorize FRD feedback function (#680 by bnavigator)
+  * BUG: extrapolation in ufun throwing errors (#682 by
+    miroslavfikar)
+  * Allow use of SciPy for LQR, LQE (#683 by murrayrm)
+  * Improve forced_response and its documentation (#588 by
+    bnavigator)
+  * Add documentation about use of axis('equal') in pzmap, rlocus
+    (#685 by murrayrm)
+  **Additional changes:**
+  * Replace Travis badge with GHA workflows, add PyPI and conda
+    badges (#584 by bnavigator)
+  * Don't install toplevel benchmarks package (#585 by bnavigator)
+  * LTI squeeze: ndarray.ndim == 0 is also a scalar (#595 by
+    bnavigator)
+  * xfail testmarkovResults until #588 is merged (#601 by
+    bnavigator)
+  * Remove from readme.rst that you need a fortran compiler (#602
+    by sawyerbfuller)
+  * Remove statement that slycot only on linux (#603 by
+    sawyerbfuller)
+  * Allow float precision in result assertions (#615 by bnavigator)
+  * Improved unit test coverage for root_locus: dtime and sisotool
+    (#617 by bnavigator)
+  * Add DefaultDict for deprecation handling (#619 by bnavigator)
+  * Documentation updates (#633 by murrayrm)
+  * Various docstring edits + fixed plot legends on cruise control
+    example (#643 by billtubbs)
+  * Ease test tolerance on timeseries (#659 by bnavigator)
+  * Use conda-forge for numpy (CI fix) (#667 by bnavigator)
+  * Fix doc escape (#674 by bnavigator)
+  * Remove duplicate Slycot error handling, require Slycot >=0.4
+    (#678 by bnavigator)
+
 -------------------------------------------------------------------
 Sun Mar 21 10:13:42 UTC 2021 - Ben Greiner <code@bnavigator.de>
 
diff --git a/python-control.spec b/python-control.spec
index d18b3c3..c572abe 100644
--- a/python-control.spec
+++ b/python-control.spec
@@ -16,12 +16,11 @@
 #
 
 
-%{?!python_module:%define python_module() python-%{**} python3-%{**}}
+%{?!python_module:%define python_module() python3-%{**}}
 %define skip_python2 1
-# SciPy 1.6.0 dropped Python 3.6
 %define skip_python36 1
 Name:           python-control
-Version:        0.9.0
+Version:        0.9.1
 Release:        0
 Summary:        Python control systems library
 License:        BSD-3-Clause