diff --git a/packages/install.sh b/packages/install.sh
index 8d27de9..3b3cfa5 100755
--- a/packages/install.sh
+++ b/packages/install.sh
@@ -86,8 +86,7 @@ get_os_name () {
                           sed 's/.*(\(.*\)).*/\1/' | head -1 | \
                           tr '[:upper:]' '[:lower:]'`
                 # For CentOS grab release
-                release=`cat /etc/*-release | grep -i 'almalinux\|rocky\|centos.*[0-9]' | \
-                         sed 's/^[^0-9]*\([0-9][0-9]*\).*$/\1/' | head -1`
+                release=`cat /etc/*-release | grep -i '^version_id=' | cut -d '"' -f 2 | cut -c 1`
                 ;;
             rhel|ol)
                 codename=`cat /etc/*-release | grep -i 'red hat.*(' | \
@@ -522,7 +521,7 @@ case "$os" in
         incr_step
 
         case "$os$release" in
-            rhel8|centos8|amzn2)
+            rhel8|rhel9|centos8|centos9|amzn2)
                 check_python 3
                 python_supported=3
                 ;;
diff --git a/packages/nginx-amplify-agent/requirements-rhel9.txt b/packages/nginx-amplify-agent/requirements-rhel9.txt
new file mode 100644
index 0000000..83c332d
--- /dev/null
+++ b/packages/nginx-amplify-agent/requirements-rhel9.txt
@@ -0,0 +1,9 @@
+gevent==21.8.0
+greenlet==1.1.3
+netaddr==0.8.0
+flup==1.0.3
+crossplane==0.5.7
+rstr==3.0.0
+python-daemon==2.2.4
+ujson==5.4.0
+PyMySQL==1.0.2
diff --git a/packages/nginx-amplify-agent/rpm/nginx-amplify-agent.spec b/packages/nginx-amplify-agent/rpm/nginx-amplify-agent.spec
index 6ab6905..ba0ead2 100644
--- a/packages/nginx-amplify-agent/rpm/nginx-amplify-agent.spec
+++ b/packages/nginx-amplify-agent/rpm/nginx-amplify-agent.spec
@@ -23,13 +23,22 @@ BuildRequires: python3-pip
 %if 0%{?amzn} >= 2
 Requires: python3 >= 3.7
 Requires: python3-requests
-%else
+%endif
+
+%if 0%{?rhel} == 8
 Requires: python3 >= 3.6
 Requires: python3-gevent
 Requires: python3-requests
 Requires: python3-netifaces
 %endif
 
+%if 0%{?rhel} == 9
+Requires: python3 >= 3.9
+Requires: python3-requests
+Requires: python3-netifaces
+Requires: python3-psutil
+%endif
+
 Requires: initscripts >= 8.36
 Requires(post): chkconfig
 
@@ -50,12 +59,17 @@ See http://nginx.com/amplify for more information
 
 %prep
 %setup -q -n nginx-amplify-agent-%{version}
-cp -p %{SOURCE0} .
+%{__cp} -p %{SOURCE0} .
 
 
 %build
 %{__python3} -m pip install --upgrade --target=amplify --no-compile -r %%REQUIREMENTS%%
-%{__python3} -c 'import setuptools; exec(open("setup.py").read())' build
+%if 0%{?rhel} == 9
+# https://github.com/pypa/pip/issues/10629
+%{__python3} -m pip install --upgrade --target=amplify_ --no-compile zope.event
+%{__cp} -Pr amplify_/zope* amplify/
+%endif
+%{__python3} setup.py build
 
 
 %pre