diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 93b859d3ff..52bff8013a 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -29,7 +29,7 @@ Since last release
 * Moved to unified CHANGELOG Entry and check them with GithubAction (#1571)
 * Major update and modernization of build (#1587, #1632, #1640)
 * Changed Json formatting for compatibility with current python standards (#1587)
-* Changed README.rst installation instructions, tested on fresh Ubuntu-22.04 system with Python 3.11 (#1617)
+* Changed README.rst installation instructions, tested on fresh Ubuntu-22.04 system with Python 3.11 (#1617, #1644)
 
 **Removed:**
 
diff --git a/README.rst b/README.rst
index f2b2138e21..e16152cf80 100644
--- a/README.rst
+++ b/README.rst
@@ -86,6 +86,7 @@ Package                Minimum Version
 ``sqlite3``              3.7.10
 ``HDF5``                 1.8.4
 ``Coin-Cbc``             2.5
+``zlib``                 1.1.4
 ====================   ==================
 
 For detailed instructions on installing dependencies, see `Installing Dependencies <DEPENDENCIES.rst>`_.
@@ -115,7 +116,7 @@ To install Cyclus and its dependencies onto a clean Ubuntu machine (tested on 18
 
 - ``conda activate cyclus``
 
-- ``conda install -y openssh gxx_linux-64 gcc_linux-64 cmake make docker-pycreds git xo python-json-logger glib glibmm libxml2 libxmlpp libxmlpp-4.0 libblas libcblas liblapack pkg-config coincbc boost-cpp hdf5 sqlite pcre gettext bzip2 xz setuptools pytest pytables pandas jinja2 "cython<3" websockets pprintpp``
+- ``conda install -y openssh gxx_linux-64 gcc_linux-64 cmake make docker-pycreds git xo python-json-logger glib glibmm zlib libxml2 libxmlpp libxmlpp-4.0 libblas libcblas liblapack pkg-config coincbc boost-cpp hdf5 sqlite pcre gettext bzip2 xz setuptools pytest pytables pandas jinja2 "cython<3" websockets pprintpp``
 
 - ``conda install -y --force-reinstall libsqlite``