diff --git a/plans/tier0.fmf b/plans/tier0.fmf
index a82298f952..ceadeb4c94 100644
--- a/plans/tier0.fmf
+++ b/plans/tier0.fmf
@@ -154,8 +154,8 @@ description+: |
             /resolve_dependency:
                 adjust+:
                     - enabled: true
-                      when: distro == centos, oracle
-                      because: We do not have any tracked packages with Rocky and Alma for this test case
+                      when: distro == centos, oracle and distro != oracle-9
+                      because: We do not have any tracked packages for Alma, Rocky or Oracle Linux 9 for this test case
                 summary+: |
                     Handle dependency packages
                 description+: |
diff --git a/plans/tier1.fmf b/plans/tier1.fmf
index d02402da54..90db6c709c 100644
--- a/plans/tier1.fmf
+++ b/plans/tier1.fmf
@@ -185,6 +185,10 @@ description+: |
                     - changed-grub-file/valid_changes_to_grub_file
 
         /changed_grub_invalid:
+            adjust+:
+                - enabled: false
+                  when: distro == alma-8-latest and boot_method == uefi or distro == alma-9
+                  because: The changes to the grub file result in a unbootable system.
             discover+:
                 test+<:
                     - changed-grub-file/invalid_changes_to_grub_file
diff --git a/tests/ansible_collections/roles/install-submgr/install_submgr_from_centos_8.yml b/tests/ansible_collections/roles/install-submgr/install_submgr_from_centos_8.yml
deleted file mode 100644
index abbcf20eed..0000000000
--- a/tests/ansible_collections/roles/install-submgr/install_submgr_from_centos_8.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-- hosts: all
-  tasks:
-    - name: Add the CentOS Linux 8 BaseOS repo
-      yum_repository:
-        name: baseos
-        description: CentOS Linux 8 BaseOS
-        baseurl: https://vault.centos.org/centos/8/BaseOS/x86_64/os/
-        gpgcheck: no
-
-    - name: Install subscription-manager from the CentOS Linux 8 BaseOS repo (signed by CentOS)
-      yum:
-        name: subscription-manager
-        disablerepo: "*"
-        enablerepo: "baseos"
-        state: present
diff --git a/tests/ansible_collections/roles/install-submgr/install_submgr_from_ubi_7.yml b/tests/ansible_collections/roles/install-submgr/install_submgr_from_ubi_7.yml
deleted file mode 100644
index 19e89b14ed..0000000000
--- a/tests/ansible_collections/roles/install-submgr/install_submgr_from_ubi_7.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-- hosts: all
-  tasks:
-    - name: Add the Universal Base Image 7 repo
-      yum_repository:
-        name: ubi
-        description: Universal Base Image 7
-        baseurl: https://cdn-ubi.redhat.com/content/public/ubi/dist/ubi/server/7/7Server/x86_64/os/
-        gpgcheck: no
-
-    - name: Install subscription-manager from the UBI repo (signed by Red Hat)
-      yum:
-        name: subscription-manager
-        disablerepo: "*"
-        enablerepo: "ubi"
-        state: present
diff --git a/tests/ansible_collections/roles/install-submgr/main.yml b/tests/ansible_collections/roles/install-submgr/main.yml
deleted file mode 100644
index 1c7ecd2b8d..0000000000
--- a/tests/ansible_collections/roles/install-submgr/main.yml
+++ /dev/null
@@ -1,12 +0,0 @@
----
-- hosts: all
-  gather_facts: yes
-  become: false
-  # On Oracle Linux 7 a "rhn-client-tols" package may be present on
-  # the system which prevents "subscription-manager" to be installed
-- import_playbook: remove_rhn_client_tools.yml
-  when: ansible_facts['distribution_major_version'] == "7" and ansible_facts['distribution'] == "OracleLinux"
-- import_playbook: install_submgr_from_ubi_7.yml
-  when: ansible_facts['distribution_major_version'] == "7"
-- import_playbook: install_submgr_from_centos_8.yml
-  when: ansible_facts['distribution_major_version'] == "8"
diff --git a/tests/ansible_collections/roles/install-submgr/remove_rhn_client_tools.yml b/tests/ansible_collections/roles/install-submgr/remove_rhn_client_tools.yml
deleted file mode 100644
index 77799e814d..0000000000
--- a/tests/ansible_collections/roles/install-submgr/remove_rhn_client_tools.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-- hosts: all
-  tasks:
-    - name: remove rhn client tools
-      yum:
-        name: rhn-client-tools
-        state: absent
diff --git a/tests/ansible_collections/roles/oracle-linux-specific/tasks/boot_standard_kernel.yml b/tests/ansible_collections/roles/oracle-linux-specific/tasks/boot_standard_kernel.yml
index 0158ad8471..8b687fc408 100644
--- a/tests/ansible_collections/roles/oracle-linux-specific/tasks/boot_standard_kernel.yml
+++ b/tests/ansible_collections/roles/oracle-linux-specific/tasks/boot_standard_kernel.yml
@@ -14,8 +14,17 @@
 - name: Set default kernel to Red Hat compatible kernel
   shell: "grubby --set-default /boot/vmlinuz-{{ kernel_ver.stdout }}"
 
-# On OL9 the grubby call is not recognized for some reason
-# Set the entry manually just as a safety measure
-- name: Set the default kernel manually for OL9
-  shell: 'grub2-set-default "Oracle Linux Server ({{ kernel_ver.stdout }}) {{ ansible_distribution_version }}"'
+# On OL9 the /etc/default/grub might be configured in a way, that it's not possible to boot
+# into the RHCK (Red Hat Compatible Kernel), fix that here
+- name: Set the /etc/grub/default
+  lineinfile:
+    path: /etc/default/grub
+    line: '{{ item }}'
+    insertafter: EOF
+  loop:
+    - 'GRUB_ENABLE_BLSCFG=true'
+    - 'GRUB_TERMINAL_OUTPUT="console"'
   when: ansible_distribution == "OracleLinux" and ansible_distribution_major_version == "9"
+
+- name: Run grub2-mkconfig
+  shell: grub2-mkconfig -o /boot/grub2/grub.cfg
diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py
index c40efa1261..db0fdcadbc 100644
--- a/tests/integration/conftest.py
+++ b/tests/integration/conftest.py
@@ -35,13 +35,18 @@
 
 SAT_REG_COMMAND = {
     "alma-8-latest": SAT_REG_FILE["ALMA8_SAT_REG"],
+    "alma-9-latest": SAT_REG_FILE["ALMA9_SAT_REG"],
     "alma-8.8": SAT_REG_FILE["ALMA88_SAT_REG"],
     "rocky-8-latest": SAT_REG_FILE["ROCKY8_SAT_REG"],
     "rocky-8.8": SAT_REG_FILE["ROCKY88_SAT_REG"],
+    "rocky-9-latest": SAT_REG_FILE["ROCKY9_SAT_REG"],
     "oracle-8-latest": SAT_REG_FILE["ORACLE8_SAT_REG"],
+    "oracle-9-latest": SAT_REG_FILE["ORACLE9_SAT_REG"],
     "centos-8-latest": SAT_REG_FILE["CENTOS8_SAT_REG"],
     "oracle-7": SAT_REG_FILE["ORACLE7_SAT_REG"],
     "centos-7": SAT_REG_FILE["CENTOS7_SAT_REG"],
+    "stream-8-latest": SAT_REG_FILE["STREAM8_SAT_REG"],
+    "stream-9-latest": SAT_REG_FILE["STREAM9_SAT_REG"],
 }
 
 
@@ -476,13 +481,13 @@ def _load_json_schema(path):
 
 
 @pytest.fixture
-def pre_registered(shell, request, yum_conf_exclude):
+def pre_registered(shell, request):
     """
     A fixture to install subscription manager and pre-register the system prior to the convert2rhel run.
     For Oracle Linux we're using the _add_client_tools_repo_oracle to enable the client-tools repository
     to install the subscription-manager package from.
-    We also exclude the rhn-client* packages for the same reason.
-    On Oracle Linux subscription-manger is obsolete and replaced by rhn-client* packages when installing subman.
+    We call the subman installation with the no obsolete flag to be able to install the package even on Oracle Linux
+     where the subscription-manger is obsolete and replaced by rhn-client* packages when installing subman.
     By default, the RHSM_USERNAME and RHSM_PASSWORD is passed to the subman registration.
     Can be parametrized by requesting a different KEY from the TEST_VARS file.
     @pytest.mark.parametrize("pre_registered", [("DIFFERENT_USERNAME", "DIFFERENT_PASSWORD")], indirect=True)
@@ -497,13 +502,10 @@ def pre_registered(shell, request, yum_conf_exclude):
         print(">>> Using parametrized username and password requested in the fixture.")
 
     if "oracle" in SYSTEM_RELEASE_ENV:
-        # Remove the rhn-client-tools package to make way for subscription-manager installation
-        # given subman is obsoleted by the rhn-client-tools on Oracle
-        shell("yum remove -y rhn-client-tools")
         # Add the client-tools repository for Oracle linux to install subscription-manager from
         _add_client_tools_repo(shell)
 
-    assert shell("yum install -y subscription-manager").returncode == 0
+    assert shell("yum install --setopt=obsoletes=0 -y subscription-manager").returncode == 0
     # The SSL certificate for accessing cdn.redhat.com is intentionally missing from
     # the subscription-manager-rhsm-certificates package on CentOS Linux 7
     shell(
@@ -733,38 +735,32 @@ def yum_conf_exclude(shell, backup_directory, request):
 
         def test_function(yum_conf_exclude):
     """
-    # We need to do this only for Oracle Linux
-    # rhn* is one of the excluded packages in convert2rhel configs
-    # so if the package is present on the system, is excluded in yum.conf
-    # and convert2rhel tries to back it up by calling yumdownloader
-    # it fails to do so because the call conflicts with the exclude option
-    if "oracle" in SYSTEM_RELEASE_ENV:
-        exclude = ["rhn-client*"]
-        if hasattr(request, "param"):
-            exclude = request.param
-            print(">>> Using parametrized packages requested in the fixture.")
-        yum_config = "/etc/yum.conf"
-        backup_dir = os.path.join(backup_directory, "yumconf")
-        shell(f"mkdir -v {backup_dir}")
-        config_bak = os.path.join(backup_dir, os.path.basename(yum_config))
-        config = configparser.ConfigParser()
-        config.read(yum_config)
-
-        assert shell(f"cp -v {yum_config} {config_bak}").returncode == 0
-
-        pkgs_to_exclude = " ".join(exclude)
-        # If there is already an `exclude` section, append to the existing value
-        if config.has_option("main", "exclude"):
-            pre_existing_value = config.get("main", "exclude")
-            config.set("main", "exclude", f"{pre_existing_value} {pkgs_to_exclude}")
-        else:
-            config.set("main", "exclude", pkgs_to_exclude)
+    exclude = [""]
+    if hasattr(request, "param"):
+        exclude = request.param
+        print(">>> Using parametrized packages requested in the fixture.")
+    yum_config = "/etc/yum.conf"
+    backup_dir = os.path.join(backup_directory, "yumconf")
+    shell(f"mkdir -v {backup_dir}")
+    config_bak = os.path.join(backup_dir, os.path.basename(yum_config))
+    config = configparser.ConfigParser()
+    config.read(yum_config)
+
+    assert shell(f"cp -v {yum_config} {config_bak}").returncode == 0
+
+    pkgs_to_exclude = " ".join(exclude)
+    # If there is already an `exclude` section, append to the existing value
+    if config.has_option("main", "exclude"):
+        pre_existing_value = config.get("main", "exclude")
+        config.set("main", "exclude", f"{pre_existing_value} {pkgs_to_exclude}")
+    else:
+        config.set("main", "exclude", pkgs_to_exclude)
 
-        with open(yum_config, "w") as configfile:
-            config.write(configfile, space_around_delimiters=False)
+    with open(yum_config, "w") as configfile:
+        config.write(configfile, space_around_delimiters=False)
 
-        assert config.has_option("main", "exclude")
-        assert all(pkg in config.get("main", "exclude") for pkg in exclude)
+    assert config.has_option("main", "exclude")
+    assert all(pkg in config.get("main", "exclude") for pkg in exclude)
 
     yield
 
@@ -809,7 +805,7 @@ def _remove_client_tools_repo(shell):
 
 
 @pytest.fixture
-def satellite_registration(shell, yum_conf_exclude, request):
+def satellite_registration(shell, request):
     """
     Fixture
     Register the system to the Satellite server
@@ -879,7 +875,7 @@ def backup_directory(shell, request):
 
 
 @pytest.fixture()
-def install_and_set_up_subman_to_stagecdn(shell, yum_conf_exclude):
+def install_and_set_up_subman_to_stagecdn(shell):
     """ "
     A fixture to install subscription-manager and set up to point to a testing environments.
     rhsm.baseurl and server.hostname to be changed.
@@ -888,11 +884,7 @@ def install_and_set_up_subman_to_stagecdn(shell, yum_conf_exclude):
     # Add the client tools repository to install the subscription-manager from
     # This is mainly for Oracle Linux but does not hurt to do the same for CentOS as well
     _add_client_tools_repo(shell)
-    # Since we're using the yum_conf_exclude fixture, which excludes rhn-client*
-    # by default, we need to remove the pacakge to prevent issues during the yum transaction
-    if SystemInformationRelease.distribution == "oracle":
-        shell("yum remove -y rhn-client*")
-    shell(f"yum install subscription-manager -y")
+    shell(f"yum install --setopt=obsoletes=0 subscription-manager -y")
 
     # Point the server hostname to the staging environment,
     # so we don't need to pass it to convert2rhel explicitly
diff --git a/tests/integration/tier0/non-destructive/duplicate-pkgs/main.fmf b/tests/integration/tier0/non-destructive/duplicate-pkgs/main.fmf
index 51689a1cc0..f526cff33a 100644
--- a/tests/integration/tier0/non-destructive/duplicate-pkgs/main.fmf
+++ b/tests/integration/tier0/non-destructive/duplicate-pkgs/main.fmf
@@ -8,9 +8,10 @@ description+: |
 
 /duplicate-pkgs:
     link: https://issues.redhat.com/browse/RHELC-1070
+    enabled: false
     adjust+:
-        - enabled: false
-          when: distro == centos-8, alma-8, rocky-8, oracle-8
+        - enabled: true
+          when: distro == centos-7, oracle-7
           because: |
             The bug is reproducible only on EL7 distros.
             On EL8 the issue is handled by the DNF itself.
diff --git a/tests/integration/tier0/non-destructive/kernel/test_custom_kernel.py b/tests/integration/tier0/non-destructive/kernel/test_custom_kernel.py
index 3e205584a5..cc14da1ad2 100644
--- a/tests/integration/tier0/non-destructive/kernel/test_custom_kernel.py
+++ b/tests/integration/tier0/non-destructive/kernel/test_custom_kernel.py
@@ -1,56 +1,70 @@
 import os
+import re
 
 import pexpect.exceptions
 import pytest
 
-from conftest import SYSTEM_RELEASE_ENV
-
-
-ORIGINAL_KERNEL = os.popen("rpm -q --last kernel | head -1 | cut -d ' ' -f1").read()
-
-DISTRO_KERNEL_MAPPING = {
-    "centos-7": {
-        "original_kernel": f"{ORIGINAL_KERNEL}",
-        "custom_kernel": "https://yum.oracle.com/repo/OracleLinux/OL7/latest/x86_64/getPackage/kernel-3.10.0-1160.76.1.0.1.el7.x86_64.rpm",
-        "grub_substring": "CentOS Linux (3.10.0-1160.76.1.0.1.el7.x86_64) 7 (Core)",
-    },
-    # We hardcode original kernel for CentOS 8.5 as it won't receive any updates anymore
-    "centos-8-latest": {
-        "original_kernel": "kernel-core-4.18.0-348.7.1.el8_5.x86_64",
-        "custom_kernel": "https://yum.oracle.com/repo/OracleLinux/OL8/5/baseos/base/x86_64/getPackage/kernel-core-4.18.0-348.el8.x86_64.rpm",
-        "grub_substring": "Oracle Linux Server (4.18.0-348.el8.x86_64) 8.5",
-    },
-    "oracle-7": {
-        "original_kernel": f"{ORIGINAL_KERNEL}",
-        "custom_kernel": "http://mirror.centos.org/centos/7/os/x86_64/Packages/kernel-3.10.0-1160.el7.x86_64.rpm",
-        "grub_substring": "Oracle Linux Server 7.9, with Linux 3.10.0-1160.el7.x86_64",
-    },
-    # Install CentOS 8.5 kernel
-    "oracle-8-latest": {
-        "original_kernel": f"{ORIGINAL_KERNEL}",
-        "custom_kernel": "https://vault.centos.org/centos/8.5.2111/BaseOS/x86_64/os/Packages/kernel-core-4.18.0-348.7.1.el8_5.x86_64.rpm",
-        "grub_substring": "CentOS Linux (4.18.0-348.7.1.el8_5.x86_64) 8",
-    },
-    "alma-8": {
-        "original_kernel": f"{ORIGINAL_KERNEL}",
-        "custom_kernel": "https://yum.oracle.com/repo/OracleLinux/OL8/5/baseos/base/x86_64/getPackage/kernel-core-4.18.0-348.el8.x86_64.rpm",
-        "grub_substring": "Oracle Linux Server (4.18.0-348.el8.x86_64) 8.5",
-    },
-    "rocky-8": {
-        "original_kernel": f"{ORIGINAL_KERNEL}",
-        "custom_kernel": "https://yum.oracle.com/repo/OracleLinux/OL8/5/baseos/base/x86_64/getPackage/kernel-core-4.18.0-348.el8.x86_64.rpm",
-        "grub_substring": "Oracle Linux Server (4.18.0-348.el8.x86_64) 8.5",
-    },
-}
-
-if "alma-8" in SYSTEM_RELEASE_ENV:
-    distro = "alma-8"
-elif "rocky" in SYSTEM_RELEASE_ENV:
-    distro = "rocky-8"
-else:
-    distro = SYSTEM_RELEASE_ENV
-
-_, CUSTOM_KERNEL, GRUB_SUBSTRING = DISTRO_KERNEL_MAPPING[distro].values()
+from conftest import SYSTEM_RELEASE_ENV, SystemInformationRelease
+
+
+def _cross_vendor_kernel():
+    """
+    Helper function to assign a cross vendor kernel.
+    Example:
+        Running on CentOS 7, we install the Oracle Linux 7 signed kernel.
+        distro == centos-7
+        install_what = oracle-7-kernel
+    """
+
+    # This mapping includes cross vendor kernels and their respective grub substrings to set for boot
+    INSTALL_WHAT_KERNEL_MAPPING = {
+        "oracle-7-kernel": {
+            "custom_kernel": "https://yum.oracle.com/repo/OracleLinux/OL7/latest/x86_64/getPackage/kernel-3.10.0-1160.76.1.0.1.el7.x86_64.rpm",
+            "grub_substring": "CentOS Linux (3.10.0-1160.76.1.0.1.el7.x86_64) 7 (Core)",
+        },
+        "centos-7-kernel": {
+            "custom_kernel": "http://mirror.centos.org/centos/7/os/x86_64/Packages/kernel-3.10.0-1160.el7.x86_64.rpm",
+            "grub_substring": "Oracle Linux Server 7.9, with Linux 3.10.0-1160.el7.x86_64",
+        },
+        "oracle-8-kernel": {
+            "custom_kernel": "https://yum.oracle.com/repo/OracleLinux/OL8/5/baseos/base/x86_64/getPackage/kernel-core-4.18.0-348.el8.x86_64.rpm",
+            "grub_substring": "Oracle Linux Server (4.18.0-348.el8.x86_64) 8.5",
+        },
+        "centos-8-kernel": {
+            "custom_kernel": "https://vault.centos.org/centos/8.5.2111/BaseOS/x86_64/os/Packages/kernel-core-4.18.0-348.7.1.el8_5.x86_64.rpm",
+            "grub_substring": "CentOS Linux (4.18.0-348.7.1.el8_5.x86_64) 8",
+        },
+        "stream-9-kernel": {
+            "custom_kernel": "https://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os/Packages/kernel-5.14.0-457.el9.x86_64.rpm",
+            "grub_substring": "CentOS Stream (5.14.0-457.el9.x86_64.rpm) 9",
+        },
+        "alma-9-kernel": {
+            "custom_kernel": "https://repo.almalinux.org/almalinux/9.4/BaseOS/x86_64/os/Packages/kernel-5.14.0-427.20.1.el9_4.x86_64.rpm",
+            "grub_substring": "AlmaLinux (5.14.0-427.20.1.el9_4.x86_64) 9.4 (Seafoam Ocelot)",
+        },
+    }
+
+    distro = f"{SystemInformationRelease.distribution}-{SystemInformationRelease.version.major}"
+
+    install_what = ""
+    # Based on a current OS we decide which cross vendor kernel to install
+    # install_what variable indicates that
+    if distro == "oracle-7":
+        install_what = "centos-7-kernel"
+    elif distro == "centos-7":
+        install_what = "oracle-7-kernel"
+    elif re.match(r"^(alma|rocky|centos|stream)-8", distro):
+        install_what = "oracle-8-kernel"
+    elif distro == "oracle-8":
+        install_what = "centos-8-kernel"
+    elif re.match(r"^(alma|rocky|centos|oracle)-9", distro):
+        install_what = "stream-9-kernel"
+    elif distro == "stream-9":
+        install_what = "alma-9-kernel"
+
+    custom_kernel, grub_substring = INSTALL_WHAT_KERNEL_MAPPING[install_what].values()
+
+    return custom_kernel, grub_substring
 
 
 @pytest.fixture(scope="function")
@@ -62,11 +76,12 @@ def custom_kernel(shell, hybrid_rocky_image):
     Remove the current installed kernel and install the machine default kernel
     after the test.
     """
+    custom_kernel, grub_substring = _cross_vendor_kernel()
     if os.environ["TMT_REBOOT_COUNT"] == "0":
 
-        assert shell("yum install %s -y" % CUSTOM_KERNEL).returncode == 0
+        assert shell("yum install %s -y" % custom_kernel).returncode == 0
 
-        assert shell("grub2-set-default '%s'" % GRUB_SUBSTRING).returncode == 0
+        assert shell("grub2-set-default '%s'" % grub_substring).returncode == 0
 
         shell("tmt-reboot -t 600")
 
@@ -74,7 +89,7 @@ def custom_kernel(shell, hybrid_rocky_image):
 
     if os.environ["TMT_REBOOT_COUNT"] == "1":
         # Remove the current installed kernel and install the machine default kernel.
-        custom_kernel_release = CUSTOM_KERNEL.rsplit("/", 1)[-1].replace(".rpm", "")
+        custom_kernel_release = custom_kernel.rsplit("/", 1)[-1].replace(".rpm", "")
         assert shell("rpm -e %s" % custom_kernel_release).returncode == 0
 
         original_kernel = os.popen("rpm -q --last kernel | head -1 | cut -d ' ' -f1").read()
diff --git a/tests/integration/tier0/non-destructive/rollback-handling/test_rollback_handling.py b/tests/integration/tier0/non-destructive/rollback-handling/test_rollback_handling.py
index 336aa778b0..57a95d0d79 100644
--- a/tests/integration/tier0/non-destructive/rollback-handling/test_rollback_handling.py
+++ b/tests/integration/tier0/non-destructive/rollback-handling/test_rollback_handling.py
@@ -37,8 +37,8 @@ def assign_packages(packages=None):
     packages = ["usermode", "rhn-setup"]
 
     # The packages 'python-syspurpose' and 'python3-syspurpose' were removed in Oracle Linux 7.9
-    # and Oracle Linux 8.2 respectively.
-    if not os_distribution == "oracle":
+    # and Oracle Linux 8.2 respectively, the package is also not present in EL9 systems
+    if os_distribution != "oracle" or os_version == 9:
         python_ver = ""
         if os_version > 7:
             python_ver = "3"
diff --git a/tests/integration/tier1/destructive/proxy-conversion/test_proxy_conversion.py b/tests/integration/tier1/destructive/proxy-conversion/test_proxy_conversion.py
index 1cfa806960..4b53e8981c 100644
--- a/tests/integration/tier1/destructive/proxy-conversion/test_proxy_conversion.py
+++ b/tests/integration/tier1/destructive/proxy-conversion/test_proxy_conversion.py
@@ -1,3 +1,4 @@
+import re
 import socket
 
 import pytest
@@ -93,36 +94,29 @@ def setup_rhsm(shell):
         ).returncode
         == 0
     )
-    if SYSTEM_RELEASE_ENV in ("centos-7", "oracle-7"):
-        assert (
-            shell(
-                f"curl -o /etc/yum.repos.d/client-tools.repo https://cdn-public.redhat.com/content/public/repofiles/client-tools-for-rhel-7-server.repo \
-                    --proxy http://{TEST_VARS['PROXY_SERVER']}:{TEST_VARS['PROXY_PORT']}",
-                silent=True,
-            ).returncode
-            == 0
-        )
-    else:
-        assert (
-            shell(
-                f"curl -o /etc/yum.repos.d/client-tools.repo https://cdn-public.redhat.com/content/public/repofiles/client-tools-for-rhel-8.repo \
-                    --proxy http://{TEST_VARS['PROXY_SERVER']}:{TEST_VARS['PROXY_PORT']}",
-                silent=True,
-            ).returncode
-            == 0
-        )
-        # On CentOS 8.5 we need to replace the $releasever in the url to 8.5,
-        # otherwise the dnf will complain with dependency issues.
-        if "centos-8" in SYSTEM_RELEASE_ENV:
-            shell("sed -i 's#\$releasever#8.5#' /etc/yum.repos.d/client-tools.repo")
+
+    client_tools_repo = ""
+    if re.match(r"^(centos|oracle)-7", SYSTEM_RELEASE_ENV):
+        client_tools_repo = "client-tools-for-rhel-7-server.repo"
+    elif re.match(r"^(alma|centos|oracle|rocky|stream)-8", SYSTEM_RELEASE_ENV):
+        client_tools_repo = "client-tools-for-rhel-8.repo"
+    elif re.match(r"^(alma|oracle|rocky|stream)-9", SYSTEM_RELEASE_ENV):
+        client_tools_repo = "client-tools-for-rhel-9.repo"
+
+    ct_repo_shell_call = f"curl -o /etc/yum.repos.d/client-tools.repo https://cdn-public.redhat.com/content/public/repofiles/{client_tools_repo} \
+                    --proxy http://{TEST_VARS['PROXY_SERVER']}:{TEST_VARS['PROXY_PORT']}"
+
+    assert shell(ct_repo_shell_call, silent=True).returncode == 0
+
+    # On CentOS 8.5 we need to replace the $releasever in the url to 8.5,
+    # otherwise the dnf will complain with dependency issues.
+    if "centos-8" in SYSTEM_RELEASE_ENV:
+        shell("sed -i 's#\$releasever#8.5#' /etc/yum.repos.d/client-tools.repo")
 
     # On Oracle Linux 7 a "rhn-client-tools" package may be present on
     # the system which prevents "subscription-manager" to be installed.
-    if "oracle" in SYSTEM_RELEASE_ENV:
-        shell("yum remove rhn-client-tools -y")
-        shell("echo 'exclude=rhn-client*' >> /etc/yum.conf")
-
-    shell("yum -y install subscription-manager subscription-manager-rhsm-certificates")
+    # Run the yum install call with no obsoletes flag.
+    shell("yum -y install --setopt=obsoletes=0 subscription-manager subscription-manager-rhsm-certificates")
 
     shell(
         f"subscription-manager config --server.proxy_hostname={TEST_VARS['PROXY_SERVER']} --server.proxy_port={TEST_VARS['PROXY_PORT']}",
diff --git a/tests/integration/tier1/destructive/set-locale/use_non_english_language.py b/tests/integration/tier1/destructive/set-locale/use_non_english_language.py
index f067b63388..6df8002568 100644
--- a/tests/integration/tier1/destructive/set-locale/use_non_english_language.py
+++ b/tests/integration/tier1/destructive/set-locale/use_non_english_language.py
@@ -11,7 +11,7 @@ def test_use_non_english_language(shell):
     """
     # install Chinese language pack for CentOS-8 and Oracle Linux 8
 
-    if re.match(r"^(centos|oracle|alma|rocky)-8", SYSTEM_RELEASE_ENV):
+    if re.match(r"^(centos|oracle|alma|rocky)-[89]", SYSTEM_RELEASE_ENV):
         assert shell("dnf install glibc-langpack-zh -y").returncode == 0
 
     # set locale variables that affect translations to Chinese
diff --git a/tests/integration/tier1/destructive/system-not-up-to-date/test_system_not_up_to_date.py b/tests/integration/tier1/destructive/system-not-up-to-date/test_system_not_up_to_date.py
index e8982dc125..0461e8c861 100644
--- a/tests/integration/tier1/destructive/system-not-up-to-date/test_system_not_up_to_date.py
+++ b/tests/integration/tier1/destructive/system-not-up-to-date/test_system_not_up_to_date.py
@@ -1,8 +1,9 @@
 import os
+import re
 
 import pytest
 
-from conftest import SYSTEM_RELEASE_ENV, TEST_VARS
+from conftest import TEST_VARS, SystemInformationRelease
 
 
 @pytest.fixture()
@@ -18,20 +19,18 @@ def downgrade_and_versionlock(shell):
     """
     # On some systems we cannot do the downgrade as the repos contain only the latest package version.
     # We need to install package from older repository as a workaround.
-    centos_8_pkg_url = "https://vault.centos.org/8.1.1911/BaseOS/x86_64/os/Packages/wpa_supplicant-2.7-1.el8.x86_64.rpm"
-    alma_8eus_pkg_url = (
-        "https://repo.almalinux.org/vault/8.3/BaseOS/x86_64/os/Packages/wpa_supplicant-2.9-2.el8_3.1.x86_64.rpm"
-    )
-    rocky_8eus_pkg_url = (
-        "https://dl.rockylinux.org/vault/rocky/8.3/BaseOS/x86_64/os/Packages/wpa_supplicant-2.9-2.el8.1.x86_64.rpm"
-    )
+    older_packages_mapping = {
+        "centos-8": "https://vault.centos.org/8.1.1911/BaseOS/x86_64/os/Packages/wpa_supplicant-2.7-1.el8.x86_64.rpm",
+        "almalinux-8": "https://repo.almalinux.org/vault/8.3/BaseOS/x86_64/os/Packages/wpa_supplicant-2.9-2.el8_3.1.x86_64.rpm",
+        "rocky-8": "https://dl.rockylinux.org/vault/rocky/8.3/BaseOS/x86_64/os/Packages/wpa_supplicant-2.9-2.el8.1.x86_64.rpm",
+        "almalinux-9": "https://vault.almalinux.org/9.2/BaseOS/x86_64/os/Packages/wpa_supplicant-2.10-4.el9.x86_64.rpm",
+        "rocky-9": "https://download.rockylinux.org/vault/rocky/9.2/BaseOS/x86_64/os/Packages/w/wpa_supplicant-2.10-4.el9.x86_64.rpm",
+    }
 
-    if "centos-8" in SYSTEM_RELEASE_ENV:
-        assert shell("yum install -y {}".format(centos_8_pkg_url)).returncode == 0
-    elif "alma-8" in SYSTEM_RELEASE_ENV:
-        assert shell("yum install -y {}".format(alma_8eus_pkg_url)).returncode == 0
-    elif "rocky-8" in SYSTEM_RELEASE_ENV:
-        assert shell("yum install -y {}".format(rocky_8eus_pkg_url)).returncode == 0
+    os_key = f"{SystemInformationRelease.distribution}-{SystemInformationRelease.version.major}"
+
+    if re.match(r"^(almalinux|centos|rocky)-[89]", os_key):
+        assert shell("yum install -y {}".format(older_packages_mapping.get(os_key))).returncode == 0
     else:
         assert shell("yum install openldap wpa_supplicant sqlite -y").returncode == 0
         # Try to downgrade some packages.