diff --git a/README b/README
index 02fc472..d640c5c 100644
--- a/README
+++ b/README
@@ -4,11 +4,10 @@ INSTALL
 -------
 
 calculate-server needs the following library version installed, in order to run:
-    python >= 2.5
-    python-ldap >= 2.0.0
-    pyxml >= 0.8
-    calculate-lib >= 2.1.8
-
+    python >= 3.8
+    python-ldap >= 3.3.0
+    pymilter >= 1.0.4
+    lxml >= 4.6.3
 To install calculate-server , just execute the install script 'setup.py'.
 Example:
 
diff --git a/setup.py b/setup.py
index 083075a..da419c4 100755
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,7 @@ data_files += var_data_files
 
 def scanDirs(profilesDirs):
     """Recursive scanning directories"""
-    dirs = []
+    dirs_total = []
     class dirProf:
         def __init__(self):
             self.baseDir = False
@@ -64,8 +64,8 @@ def scanDirs(profilesDirs):
                     if '/.svn' in absNameDir:
                         continue
                     dirP.dirs.append(absNameDir)
-            dirs.append(dirP)
-    return dirs
+            dirs_total.append(dirP)
+    return dirs_total
 
 def create_data_files (data_dirs, prefix=""):
     test1_files = []
@@ -87,7 +87,7 @@ def create_data_files (data_dirs, prefix=""):
             obj.dirs.remove(files_obj_dir)
         files_obj_dirs.sort(key=len, reverse=True)
         for dir_name in files_obj_dirs:
-            wr_sp = (prefix+dir_name,[])
+            wr_sp = (prefix + dir_name,[])
             file_dirs = []
             for file_name in obj.files:
                 if re.match(dir_name,file_name):
@@ -100,7 +100,7 @@ def create_data_files (data_dirs, prefix=""):
     test2_files = []
     for obj in dirs:
         for dir_name in obj.dirs:
-            wr_sp = (prefix+dir_name,[])
+            wr_sp = (prefix + dir_name,[])
             test2_files.append(wr_sp)
 
     test1_files = test2_files + test1_files
@@ -133,7 +133,7 @@ class cl_install_scripts(install_scripts):
         backup_build_dir = self.build_dir
         cl_cmd_obj = self.distribution.get_command_obj("install")
         self.build_dir = self.build_dir + "-bin"
-        self.install_dir = os.path.join(cl_cmd_obj.install_data,"bin")
+        self.install_dir = os.path.join(cl_cmd_obj.install_data, "bin")
         install_scripts.run(self)
         self.build_dir = backup_build_dir
         self.install_dir = backup_install_dir
@@ -143,11 +143,13 @@ class cl_install_data(install_data):
     def run (self):
         install_data.run(self)
         data_file = \
-            [("/etc/init.d/sortmilter.init","sortmilter",0o755),
-             ("/etc/conf.d/sortmilter.conf","sortmilter",None)]
+            [("/etc/init.d/sortmilter.init", "sortmilter", 0o755),
+             ("/etc/conf.d/sortmilter.conf", "sortmilter", None)]
         data_find = \
             dict(
-            [(os.path.basename(x[0]), [list(reversed([y for y in x[0].split("/") if y])), x[1],x[2]]) for x in data_file])
+            [(os.path.basename(x[0]), 
+                    [list(reversed([y for y in x[0].split("/") if y])), x[1],x[2]]) 
+                    for x in data_file])
 
         for path in self.get_outputs():
             nameFile = os.path.split(path)[1]
@@ -167,8 +169,8 @@ class cl_install_data(install_data):
                     if not mode is None:
                         os.chmod(path, mode)
                     if not newname is None:
-                        newname = os.path.join(os.path.dirname(path),newname)
-                        os.rename(path,newname)
+                        newname = os.path.join(os.path.dirname(path), newname)
+                        os.rename(path, newname)
 
 setup(
     name = 'calculate-server',