diff --git a/.github/workflows/functionnal-tests.yml b/.github/workflows/functionnal-tests.yml
index aaa5e5f..fc479f4 100644
--- a/.github/workflows/functionnal-tests.yml
+++ b/.github/workflows/functionnal-tests.yml
@@ -18,3 +18,10 @@ jobs:
         uses: actions/checkout@v5
       - name: Run the tests debian12
         run: ./tests/docker_build_and_run_tests.sh debian12
+  functionnal-tests-docker-debian13:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v5
+      - name: Run the tests debian13
+        run: ./tests/docker_build_and_run_tests.sh debian13
diff --git a/tests/docker/Dockerfile.debian13 b/tests/docker/Dockerfile.debian13
new file mode 100644
index 0000000..3ce6a1e
--- /dev/null
+++ b/tests/docker/Dockerfile.debian13
@@ -0,0 +1,21 @@
+FROM debian:trixie
+
+LABEL vendor="OVH"
+LABEL project="debian-cis"
+LABEL url="https://github.com/ovh/debian-cis"
+LABEL description="This image is used to run tests"
+
+RUN groupadd -g 500 secaudit && useradd  -u 500 -g 500 -s /bin/bash secaudit && install -m 700 -o secaudit -g secaudit -d /home/secaudit
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y openssh-server sudo syslog-ng net-tools auditd cron iproute2 procps
+
+COPY --chown=500:500 . /opt/debian-cis/
+
+COPY debian/default /etc/default/cis-hardening
+RUN sed -i 's#cis-hardening#debian-cis#' /etc/default/cis-hardening
+
+COPY cisharden.sudoers /etc/sudoers.d/secaudit
+RUN sed -i 's#cisharden#secaudit#' /etc/sudoers.d/secaudit
+
+
+ENTRYPOINT ["/opt/debian-cis/tests/launch_tests.sh"]
diff --git a/tests/hardening/acc_logindefs_sha512.sh b/tests/hardening/acc_logindefs_sha512.sh
index f22ed03..bcfc7e0 100644
--- a/tests/hardening/acc_logindefs_sha512.sh
+++ b/tests/hardening/acc_logindefs_sha512.sh
@@ -10,6 +10,7 @@ test_audit() {
     cp /etc/login.defs /tmp/login.defs.bak
     describe Line as comment
     sed -i 's/\(ENCRYPT_METHOD SHA512\)/# \1/' /etc/login.defs
+    sed -i 's/\(ENCRYPT_METHOD YESCRYPT\)/# \1/' /etc/login.defs
     register_test retvalshouldbe 1
     register_test contain "is not present in /etc/login.defs"
     run commented "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
@@ -22,6 +23,7 @@ test_audit() {
 
     cp /tmp/login.defs.bak /etc/login.defs
     sed -ir 's/ENCRYPT_METHOD[[:space:]]\+SHA512/ENCRYPT_METHOD MD5/' /etc/login.defs
+    sed -ir 's/ENCRYPT_METHOD[[:space:]]\+YESCRYPT/ENCRYPT_METHOD MD5/' /etc/login.defs
     describe Fail: wrong hash function configuration
     register_test retvalshouldbe 1
     register_test contain "is not present in /etc/login.defs"
diff --git a/tests/hardening/check_user_dot_file_perm.sh b/tests/hardening/check_user_dot_file_perm.sh
index a27361a..b47791c 100644
--- a/tests/hardening/check_user_dot_file_perm.sh
+++ b/tests/hardening/check_user_dot_file_perm.sh
@@ -13,6 +13,7 @@ test_audit() {
     describe Tests purposely failing
     useradd --create-home "$test_user"
     touch "/home/$test_user/$test_file"
+    chmod o+rx "/home/$test_user"
     chmod 777 "/home/$test_user/$test_file"
     register_test retvalshouldbe 1
     register_test contain "Group Write permission set on FILE"
diff --git a/tests/hardening/find_user_forward_files.sh b/tests/hardening/find_user_forward_files.sh
index cf95893..de6e089 100644
--- a/tests/hardening/find_user_forward_files.sh
+++ b/tests/hardening/find_user_forward_files.sh
@@ -12,6 +12,7 @@ test_audit() {
 
     describe Tests purposely failing
     useradd --create-home "$test_user"
+    chmod o+rx "/home/$test_user/"
     touch "/home/$test_user/$test_file"
     register_test retvalshouldbe 1
     register_test contain "$test_file present"
diff --git a/tests/hardening/find_user_netrc_files.sh b/tests/hardening/find_user_netrc_files.sh
index 07b3ed1..68c1523 100644
--- a/tests/hardening/find_user_netrc_files.sh
+++ b/tests/hardening/find_user_netrc_files.sh
@@ -12,6 +12,7 @@ test_audit() {
 
     describe Tests purposely failing
     useradd --create-home "$test_user"
+    chmod o+rx "/home/$test_user/"
     touch "/home/$test_user/$test_file"
     register_test retvalshouldbe 1
     register_test contain "$test_file present"
diff --git a/tests/hardening/find_user_rhosts_files.sh b/tests/hardening/find_user_rhosts_files.sh
index c1ee40e..db91162 100644
--- a/tests/hardening/find_user_rhosts_files.sh
+++ b/tests/hardening/find_user_rhosts_files.sh
@@ -12,6 +12,7 @@ test_audit() {
 
     describe Tests purposely failing
     useradd --create-home "$test_user"
+    chmod o+rx "/home/$test_user"
     touch "/home/$test_user/$test_file"
     register_test retvalshouldbe 1
     register_test contain "$test_file present"
diff --git a/tests/hardening/ip6tables_outbound_established.sh b/tests/hardening/ip6tables_outbound_established.sh
index 024fb86..38ed1b8 100644
--- a/tests/hardening/ip6tables_outbound_established.sh
+++ b/tests/hardening/ip6tables_outbound_established.sh
@@ -7,7 +7,7 @@ test_audit() {
 
     tests_is_ipv6_enabled
     tests_get_debian_major_version
-    if [ "$CURRENT_IPV6_ENABLED" -eq 0 ] && [ "$DEB_MAJ_VER" -gt 11 ]; then
+    if [ "$CURRENT_IPV6_ENABLED" -eq 0 ] && [ "$DEB_MAJ_VER" -eq 12 ]; then
 
         # not much to test here, unless working on a privileged container
         describe Running on blank host
@@ -15,7 +15,7 @@ test_audit() {
         # shellcheck disable=2154
         run blank "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
 
-    elif [ "$CURRENT_IPV6_ENABLED" -ne 0 ] && [ "$DEB_MAJ_VER" -gt 11 ]; then
+    elif [ "$CURRENT_IPV6_ENABLED" -ne 0 ] && [ "$DEB_MAJ_VER" -eq 12 ]; then
 
         # not much to test here, unless working on a privileged container
         describe Running on blank host
diff --git a/tests/hardening/ip6tables_rules_them_all.sh b/tests/hardening/ip6tables_rules_them_all.sh
index 94674a6..acc2c59 100644
--- a/tests/hardening/ip6tables_rules_them_all.sh
+++ b/tests/hardening/ip6tables_rules_them_all.sh
@@ -6,7 +6,7 @@ test_audit() {
 
     tests_is_ipv6_enabled
     tests_get_debian_major_version
-    if [ "$CURRENT_IPV6_ENABLED" -eq 0 ] && [ "$DEB_MAJ_VER" -gt 11 ]; then
+    if [ "$CURRENT_IPV6_ENABLED" -eq 0 ] && [ "$DEB_MAJ_VER" -eq 12 ]; then
 
         describe Prepare test
         # shellcheck disable=2216
@@ -24,7 +24,7 @@ test_audit() {
 
     fi
 
-    if [ "$DEB_MAJ_VER" -gt 11 ]; then
+    if [ "$DEB_MAJ_VER" -eq 12 ]; then
 
         describe Running success
         register_test retvalshouldbe 0
diff --git a/tests/hardening/set_perm_on_user_netrc.sh b/tests/hardening/set_perm_on_user_netrc.sh
index bf428b2..311941f 100644
--- a/tests/hardening/set_perm_on_user_netrc.sh
+++ b/tests/hardening/set_perm_on_user_netrc.sh
@@ -12,6 +12,7 @@ test_audit() {
 
     describe Tests purposely failing
     useradd --create-home "$test_user"
+    chmod o+rx "/home/$test_user/"
     touch "/home/$test_user/$test_file"
     chmod 777 "/home/$test_user/$test_file"
     register_test retvalshouldbe 1
diff --git a/tests/hardening/ssh_sys_accept_env.sh b/tests/hardening/ssh_sys_accept_env.sh
index 0ded261..437ab81 100644
--- a/tests/hardening/ssh_sys_accept_env.sh
+++ b/tests/hardening/ssh_sys_accept_env.sh
@@ -9,7 +9,8 @@ test_audit() {
 
     # Proceed to operation that will end up to a non compliant system
     describe Tests purposely failing
-    sed -ri 's/^\s*AcceptEnv\s+LANG LC_\*//' /etc/ssh/sshd_config
+    # remove the whole line, or sshd wont start (trixie)
+    sed -ri 's/^\s*AcceptEnv\s+LANG LC_\*.*$//' /etc/ssh/sshd_config
     register_test retvalshouldbe 1
     register_test contain "[ KO ] ^\s*AcceptEnv\s+LANG LC_\* is not present in /etc/ssh/sshd_config"
     run noncompliant "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
diff --git a/tests/hardening/tftp_is_disabled.sh b/tests/hardening/tftp_is_disabled.sh
index 33fe314..fcf8f94 100644
--- a/tests/hardening/tftp_is_disabled.sh
+++ b/tests/hardening/tftp_is_disabled.sh
@@ -19,18 +19,26 @@ test_audit() {
     register_test retvalshouldbe 0
     run resolved "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
 
-    describe Prepare test package dependencies
-    # try to install a package that depends on 'tftpd-hpa'
-    apt install -y tftp-hpa-dbg
-    # running on a container, we can only test the package installation, not the service management
+    # trixie: apt-cache rdepends tfptd-hpa ->  # E: No packages found
+    tests_get_debian_major_version
+    if [ "$DEB_MAJ_VER" -lt 13 ]; then
 
-    describe Running successfull test
-    register_test retvalshouldbe 0
-    # shellcheck disable=2154
-    run blank "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+        describe Prepare test package dependencies
+        # try to install a package that depends on 'tftpd-hpa'
+        apt install -y tftp-hpa-dbg
+        # running on a container, we can only test the package installation, not the service management
+
+        describe Running successfull test
+        register_test retvalshouldbe 0
+        # shellcheck disable=2154
+        run blank "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+        apt remove -y tftp-hpa-dbg
+
+    fi
 
     describe clean installation
-    apt remove -y tftp-hpa-dbg tftpd-hpa
+    apt remove -y tftpd-hpa
     apt autoremove -y
 
 }
diff --git a/tests/hardening/use_time_sync.sh b/tests/hardening/use_time_sync.sh
index 6076ff7..94d4545 100644
--- a/tests/hardening/use_time_sync.sh
+++ b/tests/hardening/use_time_sync.sh
@@ -1,6 +1,9 @@
 # shellcheck shell=bash
 # run-shellcheck
 test_audit() {
+    describe prepare test
+    apt remove -y systemd-timesyncd ntp chrony
+
     describe Running on blank host
     register_test retvalshouldbe 1
     # shellcheck disable=2154
@@ -8,7 +11,7 @@ test_audit() {
 
     describe Correcting situation
     apt-get update
-    apt-get install -y ntp
+    apt-get install -y chrony
 
     # Finally assess that your corrective actions end up with a compliant system
     describe Checking resolved state
@@ -17,7 +20,7 @@ test_audit() {
 
     # we can not check the presence of multiple time synchronization from debian packages, as they are mutually exclusive
     describe clean installation
-    apt remove -y ntp
+    apt remove -y chrony
     apt autoremove -y
 
 }