diff --git a/src/yunohost/app.py b/src/yunohost/app.py
index 0b3f40390..27a8a753f 100644
--- a/src/yunohost/app.py
+++ b/src/yunohost/app.py
@@ -2301,7 +2301,7 @@ def _value_for_locale(values):
             continue
 
     # Fallback to first value
-    return values.values()[0]
+    return list(values.values())[0]
 
 
 def _check_manifest_requirements(manifest, app_instance_name):
diff --git a/src/yunohost/backup.py b/src/yunohost/backup.py
index a22c33f15..ad5b995e7 100644
--- a/src/yunohost/backup.py
+++ b/src/yunohost/backup.py
@@ -600,7 +600,7 @@ class BackupManager():
                       for hook, infos in ret.items()
                       if any(result["state"] == "failed" for result in infos.values())}
 
-        if ret_succeed.keys() != []:
+        if list(ret_succeed.keys()) != []:
             self.system_return = ret_succeed
 
         # Add files from targets (which they put in the CSV) to the list of
diff --git a/src/yunohost/permission.py b/src/yunohost/permission.py
index 547510323..92c2c059f 100644
--- a/src/yunohost/permission.py
+++ b/src/yunohost/permission.py
@@ -106,7 +106,7 @@ def user_permission_list(short=False, full=False, ignore_system_perms=False, abs
             infos["label"] = "%s (%s)" % (main_perm_label, infos["label"])
 
     if short:
-        permissions = permissions.keys()
+        permissions = list(permissions.keys())
 
     return {'permissions': permissions}
 
@@ -668,7 +668,7 @@ def _validate_and_sanitize_permission_url(url, app_base_path, app):
     For example:
        re:/api/[A-Z]*$               -> domain.tld/app/api/[A-Z]*$
        re:domain.tld/app/api/[A-Z]*$ -> domain.tld/app/api/[A-Z]*$
-       
+
     We can also have less-trivial regexes like:
         re:^\/api\/.*|\/scripts\/api.js$
     """
diff --git a/src/yunohost/service.py b/src/yunohost/service.py
index 36d6e2797..347932add 100644
--- a/src/yunohost/service.py
+++ b/src/yunohost/service.py
@@ -490,7 +490,7 @@ def service_regen_conf(names=[], with_diff=False, force=False, dry_run=False,
             raise YunohostError('service_unknown', service=name)
 
     if names is []:
-        names = services.keys()
+        names = list(services.keys())
 
     logger.warning(m18n.n("service_regen_conf_is_deprecated"))
 
diff --git a/src/yunohost/utils/legacy.py b/src/yunohost/utils/legacy.py
index 1cc0246f3..11d483754 100644
--- a/src/yunohost/utils/legacy.py
+++ b/src/yunohost/utils/legacy.py
@@ -100,7 +100,7 @@ class SetupGroupPermissions():
 
             url = "/" if domain and path else None
             if permission:
-                known_users = user_list()["users"].keys()
+                known_users = list(user_list()["users"].keys())
                 allowed = [user for user in permission.split(',') if user in known_users]
             else:
                 allowed = ["all_users"]
@@ -235,7 +235,7 @@ def translate_legacy_rules_in_ssowant_conf_json_persistent():
     protected_urls = persistent.get("protected_urls", []) + ["re:" + r for r in persistent.get("protected_regex", [])]
     unprotected_urls = persistent.get("unprotected_urls", []) + ["re:" + r for r in persistent.get("unprotected_regex", [])]
 
-    known_users = user_list()["users"].keys()
+    known_users = list(user_list()["users"].keys())
 
     for legacy_rule in legacy_rules:
         if legacy_rule in persistent: