diff --git a/scripts/projects.py b/scripts/projects.py
index 8b745ebe..5628e8fd 100644
--- a/scripts/projects.py
+++ b/scripts/projects.py
@@ -5,7 +5,6 @@ import os
 import sys
 import argparse
 import pwd
-from sets import Set
 from os.path import isfile
 from os.path import isdir
 from os.path import expanduser
@@ -90,7 +89,7 @@ class Build(object):
             p.wait()
             if p.returncode:
                 raise Exception("failed to get " + prereq_type + " prerequisites for " + cur + ": " + cmd)
-            r = Set()
+            r = set()
             pattern = re.compile(r'.*') # might be useful at a later point, currently pointless
             for line in iter(p.stdout.readline,''):
                 debug(cmd + ' returned: ', line)
@@ -113,7 +112,7 @@ class Build(object):
             debug('already handled module ' + cur)
             return 0
 
-        deps = Set()
+        deps = set()
         all_deps.add(cur)
         for t in prereq_types:
             debug("checking prereqisites of type " + t)
@@ -124,7 +123,7 @@ class Build(object):
         return len(deps)
 
     def calculate_order(self, order, modules, prereq_types):
-        all_deps = Set()
+        all_deps = set()
         dep_tree = {}
         for m in modules:
             debug("--- adding dependency tree of module " + m)
@@ -462,10 +461,10 @@ def get_modules_from_project_txt(names, section, keys, add_self, scope,
         names_only = True):
     if isinstance(keys, basestring):
         keys = [ keys ]
-    #r = Set()
+    #r = set()
     r = []
     for key in keys:
-        visited = Set()
+        visited = set()
         for name in names:
             rr = []
             add_modules_from_project_txt_cached(rr, visited, name, section, key, add_self, scope,
@@ -801,7 +800,7 @@ def flip_graph(graph):
     for m, deps in graph.iteritems():
         for d in deps:
             if not d in r:
-                r[d] = Set()
+                r[d] = set()
             r[d].add(m)
     return r
 
@@ -831,7 +830,7 @@ def cmd_check(args_):
     path = []
     read_dep_graph(args.module, args.flavour, graph)
     unvisited = graph.keys()
-    temp = Set()
+    temp = set()
     while len(unvisited) is not 0:
         m = unvisited[0]
         debug('checking circular dependency of', m)