diff --git a/src/app.py b/src/app.py
index d08d9ab76..9f84bb2fd 100644
--- a/src/app.py
+++ b/src/app.py
@@ -561,7 +561,7 @@ def app_upgrade(
     )
     from yunohost.permission import permission_sync_to_user
     from yunohost.regenconf import manually_modified_files
-    from yunohost.utils.legacy import _patch_legacy_php_versions, _patch_legacy_helpers
+    from yunohost.utils.legacy import _patch_legacy_helpers
     from yunohost.backup import (
         backup_list,
         backup_create,
@@ -729,9 +729,6 @@ def app_upgrade(
         # Attempt to patch legacy helpers ...
         _patch_legacy_helpers(extracted_app_folder)
 
-        # Apply dirty patch to make php5 apps compatible with php7
-        _patch_legacy_php_versions(extracted_app_folder)
-
         # Prepare env. var. to pass to script
         env_dict = _make_environment_for_app_script(
             app_instance_name, workdir=extracted_app_folder, action="upgrade"
@@ -1055,7 +1052,7 @@ def app_install(
         permission_sync_to_user,
     )
     from yunohost.regenconf import manually_modified_files
-    from yunohost.utils.legacy import _patch_legacy_php_versions, _patch_legacy_helpers
+    from yunohost.utils.legacy import _patch_legacy_helpers
     from yunohost.utils.form import ask_questions_and_parse_answers
 
     # Check if disk space available
@@ -1118,9 +1115,6 @@ def app_install(
         # Attempt to patch legacy helpers ...
         _patch_legacy_helpers(extracted_app_folder)
 
-    # Apply dirty patch to make php5 apps compatible with php7
-    _patch_legacy_php_versions(extracted_app_folder)
-
     # We'll check that the app didn't brutally edit some system configuration
     manually_modified_files_before_install = manually_modified_files()
 
@@ -1383,7 +1377,7 @@ def app_remove(operation_logger, app, purge=False, force_workdir=None):
         purge -- Remove with all app data
         force_workdir -- Special var to force the working directoy to use, in context such as remove-after-failed-upgrade or remove-after-failed-restore
     """
-    from yunohost.utils.legacy import _patch_legacy_php_versions, _patch_legacy_helpers
+    from yunohost.utils.legacy import _patch_legacy_helpers
     from yunohost.hook import hook_exec, hook_remove, hook_callback
     from yunohost.permission import (
         user_permission_list,
@@ -1405,10 +1399,6 @@ def app_remove(operation_logger, app, purge=False, force_workdir=None):
     # Attempt to patch legacy helpers ...
     _patch_legacy_helpers(app_setting_path)
 
-    # Apply dirty patch to make php5 apps compatible with php7 (e.g. the remove
-    # script might date back from jessie install)
-    _patch_legacy_php_versions(app_setting_path)
-
     if force_workdir:
         # This is when e.g. calling app_remove() from the upgrade-failed case
         # where we want to remove using the *new* remove script and not the old one
diff --git a/src/backup.py b/src/backup.py
index 54d8efbfa..45fa36df5 100644
--- a/src/backup.py
+++ b/src/backup.py
@@ -1188,9 +1188,6 @@ class RestoreManager:
         try:
             self._postinstall_if_needed()
 
-            # Apply dirty patch to redirect php5 file on php7
-            self._patch_legacy_php_versions_in_csv_file()
-
             self._restore_system()
             self._restore_apps()
         except Exception as e:
@@ -1201,39 +1198,6 @@ class RestoreManager:
         finally:
             self.clean()
 
-    def _patch_legacy_php_versions_in_csv_file(self):
-        """
-        Apply dirty patch to redirect php5 and php7.x files to php8.2
-        """
-        from yunohost.utils.legacy import LEGACY_PHP_VERSION_REPLACEMENTS
-
-        backup_csv = os.path.join(self.work_dir, "backup.csv")
-
-        if not os.path.isfile(backup_csv):
-            return
-
-        replaced_something = False
-        with open(backup_csv) as csvfile:
-            reader = csv.DictReader(csvfile, fieldnames=["source", "dest"])
-            newlines = []
-            for row in reader:
-                for pattern, replace in LEGACY_PHP_VERSION_REPLACEMENTS:
-                    if pattern in row["source"]:
-                        replaced_something = True
-                        row["source"] = row["source"].replace(pattern, replace)
-
-                newlines.append(row)
-
-        if not replaced_something:
-            return
-
-        with open(backup_csv, "w") as csvfile:
-            writer = csv.DictWriter(
-                csvfile, fieldnames=["source", "dest"], quoting=csv.QUOTE_ALL
-            )
-            for row in newlines:
-                writer.writerow(row)
-
     def _restore_system(self):
         """Restore user and system parts"""
 
@@ -1368,8 +1332,6 @@ class RestoreManager:
                              name should be already install)
         """
         from yunohost.utils.legacy import (
-            _patch_legacy_php_versions,
-            _patch_legacy_php_versions_in_settings,
             _patch_legacy_helpers,
         )
         from yunohost.user import user_group_list
@@ -1408,10 +1370,6 @@ class RestoreManager:
         # Attempt to patch legacy helpers...
         _patch_legacy_helpers(app_settings_in_archive)
 
-        # Apply dirty patch to make php5 apps compatible with php7
-        _patch_legacy_php_versions(app_settings_in_archive)
-        _patch_legacy_php_versions_in_settings(app_settings_in_archive)
-
         # Delete _common.sh file in backup
         common_file = os.path.join(app_backup_in_archive, "_common.sh")
         rm(common_file, force=True)
diff --git a/src/migrations/0022_php73_to_php74_pools.py b/src/migrations/0022_php73_to_php74_pools.py
deleted file mode 100644
index 23ecc5b89..000000000
--- a/src/migrations/0022_php73_to_php74_pools.py
+++ /dev/null
@@ -1,93 +0,0 @@
-import os
-import glob
-from shutil import copy2
-from logging import getLogger
-
-from yunohost.app import _is_installed
-from yunohost.utils.legacy import _patch_legacy_php_versions_in_settings
-from yunohost.tools import Migration
-from yunohost.service import _run_service_command
-
-logger = getLogger("yunohost.migration")
-
-OLDPHP_POOLS = "/etc/php/7.3/fpm/pool.d"
-NEWPHP_POOLS = "/etc/php/7.4/fpm/pool.d"
-
-OLDPHP_SOCKETS_PREFIX = "/run/php/php7.3-fpm"
-NEWPHP_SOCKETS_PREFIX = "/run/php/php7.4-fpm"
-
-# Because of synapse é_è
-OLDPHP_SOCKETS_PREFIX2 = "/run/php7.3-fpm"
-NEWPHP_SOCKETS_PREFIX2 = "/run/php7.4-fpm"
-
-MIGRATION_COMMENT = (
-    "; YunoHost note : this file was automatically moved from {}".format(OLDPHP_POOLS)
-)
-
-
-class MyMigration(Migration):
-    "Migrate php7.3-fpm 'pool' conf files to php7.4"
-
-    dependencies = ["migrate_to_bullseye"]
-
-    def run(self):
-        # Get list of php7.3 pool files
-        oldphp_pool_files = glob.glob("{}/*.conf".format(OLDPHP_POOLS))
-
-        # Keep only basenames
-        oldphp_pool_files = [os.path.basename(f) for f in oldphp_pool_files]
-
-        # Ignore the "www.conf" (default stuff, probably don't want to touch it ?)
-        oldphp_pool_files = [f for f in oldphp_pool_files if f != "www.conf"]
-
-        for pf in oldphp_pool_files:
-            # Copy the files to the php7.3 pool
-            src = "{}/{}".format(OLDPHP_POOLS, pf)
-            dest = "{}/{}".format(NEWPHP_POOLS, pf)
-            copy2(src, dest)
-
-            # Replace the socket prefix if it's found
-            c = "sed -i -e 's@{}@{}@g' {}".format(
-                OLDPHP_SOCKETS_PREFIX, NEWPHP_SOCKETS_PREFIX, dest
-            )
-            os.system(c)
-            c = "sed -i -e 's@{}@{}@g' {}".format(
-                OLDPHP_SOCKETS_PREFIX2, NEWPHP_SOCKETS_PREFIX2, dest
-            )
-            os.system(c)
-
-            # Also add a comment that it was automatically moved from php7.3
-            # (for human traceability and backward migration)
-            c = "sed -i '1i {}' {}".format(MIGRATION_COMMENT, dest)
-            os.system(c)
-
-            app_id = os.path.basename(pf)[: -len(".conf")]
-            if _is_installed(app_id):
-                _patch_legacy_php_versions_in_settings(
-                    "/etc/yunohost/apps/%s/" % app_id
-                )
-
-            nginx_conf_files = glob.glob("/etc/nginx/conf.d/*.d/%s.conf" % app_id)
-            for nf in nginx_conf_files:
-                # Replace the socket prefix if it's found
-                c = "sed -i -e 's@{}@{}@g' {}".format(
-                    OLDPHP_SOCKETS_PREFIX, NEWPHP_SOCKETS_PREFIX, nf
-                )
-                os.system(c)
-                c = "sed -i -e 's@{}@{}@g' {}".format(
-                    OLDPHP_SOCKETS_PREFIX2, NEWPHP_SOCKETS_PREFIX2, nf
-                )
-                os.system(c)
-
-        os.system(
-            "rm /etc/logrotate.d/php7.3-fpm"
-        )  # We remove this otherwise the logrotate cron will be unhappy
-
-        # Reload/restart the php pools
-        os.system("systemctl stop php7.3-fpm")
-        os.system("systemctl disable php7.3-fpm")
-        _run_service_command("restart", "php7.4-fpm")
-        _run_service_command("enable", "php7.4-fpm")
-
-        # Reload nginx
-        _run_service_command("reload", "nginx")
diff --git a/src/utils/legacy.py b/src/utils/legacy.py
index 9b83dceca..f9e6b8661 100644
--- a/src/utils/legacy.py
+++ b/src/utils/legacy.py
@@ -25,8 +25,6 @@ from moulinette.core import MoulinetteError
 from moulinette.utils.filesystem import (
     read_file,
     write_to_file,
-    write_to_yaml,
-    read_yaml,
 )
 
 from yunohost.utils.error import YunohostValidationError
@@ -34,96 +32,6 @@ from yunohost.utils.error import YunohostValidationError
 
 logger = getLogger("yunohost.utils.legacy")
 
-LEGACY_PHP_VERSION_REPLACEMENTS = [
-    ("/etc/php5", "/etc/php/8.2"),
-    ("/etc/php/7.0", "/etc/php/8.2"),
-    ("/etc/php/7.3", "/etc/php/8.2"),
-    ("/etc/php/7.4", "/etc/php/8.2"),
-    ("/var/run/php5-fpm", "/var/run/php/php8.2-fpm"),
-    ("/var/run/php/php7.0-fpm", "/var/run/php/php8.2-fpm"),
-    ("/var/run/php/php7.3-fpm", "/var/run/php/php8.2-fpm"),
-    ("/var/run/php/php7.4-fpm", "/var/run/php/php8.2-fpm"),
-    ("php5", "php8.2"),
-    ("php7.0", "php8.2"),
-    ("php7.3", "php8.2"),
-    ("php7.4", "php8.2"),
-    ('YNH_PHP_VERSION="7.3"', 'YNH_PHP_VERSION="8.2"'),
-    ('YNH_PHP_VERSION="7.4"', 'YNH_PHP_VERSION="8.2"'),
-    (
-        'phpversion="${phpversion:-7.0}"',
-        'phpversion="${phpversion:-8.2}"',
-    ),  # Many helpers like the composer ones use 7.0 by default ...
-    (
-        'phpversion="${phpversion:-7.3}"',
-        'phpversion="${phpversion:-8.2}"',
-    ),  # Many helpers like the composer ones use 7.0 by default ...
-    (
-        'phpversion="${phpversion:-7.4}"',
-        'phpversion="${phpversion:-8.2}"',
-    ),  # Many helpers like the composer ones use 7.0 by default ...
-    (
-        '"$phpversion" == "7.0"',
-        '$(bc <<< "$phpversion >= 8.2") -eq 1',
-    ),  # patch ynh_install_php to refuse installing/removing php <= 7.3
-    (
-        '"$phpversion" == "7.3"',
-        '$(bc <<< "$phpversion >= 8.2") -eq 1',
-    ),  # patch ynh_install_php to refuse installing/removing php <= 7.3
-    (
-        '"$phpversion" == "7.4"',
-        '$(bc <<< "$phpversion >= 8.2") -eq 1',
-    ),  # patch ynh_install_php to refuse installing/removing php <= 7.3
-
-]
-
-
-def _patch_legacy_php_versions(app_folder):
-    files_to_patch = []
-    files_to_patch.extend(glob.glob("%s/conf/*" % app_folder))
-    files_to_patch.extend(glob.glob("%s/scripts/*" % app_folder))
-    files_to_patch.extend(glob.glob("%s/scripts/*/*" % app_folder))
-    files_to_patch.extend(glob.glob("%s/scripts/.*" % app_folder))
-    files_to_patch.append("%s/manifest.json" % app_folder)
-    files_to_patch.append("%s/manifest.toml" % app_folder)
-
-    for filename in files_to_patch:
-        # Ignore non-regular files
-        if not os.path.isfile(filename):
-            continue
-
-        c = (
-            "sed -i "
-            + "".join(f"-e 's@{p}@{r}@g' " for p, r in LEGACY_PHP_VERSION_REPLACEMENTS)
-            + "%s" % filename
-        )
-        os.system(c)
-
-
-def _patch_legacy_php_versions_in_settings(app_folder):
-    settings = read_yaml(os.path.join(app_folder, "settings.yml"))
-
-    if settings.get("fpm_config_dir") in ["/etc/php/7.0/fpm", "/etc/php/7.3/fpm", "/etc/php/7.4/fpm"]:
-        settings["fpm_config_dir"] = "/etc/php/8.2/fpm"
-    if settings.get("fpm_service") in ["php7.0-fpm", "php7.3-fpm", "php7.4-fpm"]:
-        settings["fpm_service"] = "php8.2-fpm"
-    if settings.get("phpversion") in ["7.0", "7.3", "7.4"]:
-        settings["phpversion"] = "8.2"
-
-    # We delete these checksums otherwise the file will appear as manually modified
-    list_to_remove = [
-        "checksum__etc_php_7.4_fpm_pool",
-        "checksum__etc_php_7.3_fpm_pool",
-        "checksum__etc_php_7.0_fpm_pool",
-        "checksum__etc_nginx_conf.d",
-    ]
-    settings = {
-        k: v
-        for k, v in settings.items()
-        if not any(k.startswith(to_remove) for to_remove in list_to_remove)
-    }
-
-    write_to_yaml(app_folder + "/settings.yml", settings)
-
 
 def _patch_legacy_helpers(app_folder):
     files_to_patch = []