diff --git a/setup.py b/setup.py
index 346f026..6f2d34e 100644
--- a/setup.py
+++ b/setup.py
@@ -324,6 +324,8 @@
                                libraries=math_libs) )
         # random number generator implemented in C
         exts.append( Extension("_random", ["_randommodule.c"]) )
+        # fast iterator tools implemented in C
+        exts.append( Extension("itertools", ["itertoolsmodule.c"]) )
         # operator.add() and similar goodies
         exts.append( Extension('operator', ['operator.c']) )
         # Python C API test module