diff --git a/scapy/config.py b/scapy/config.py
index 9ce5a6974a9abb61f0d06f2540a1f7d1b8355ebd..13600897482a070a3acc43a2195fb2b97719084b 100644
--- a/scapy/config.py
+++ b/scapy/config.py
@@ -264,7 +264,7 @@ noenum    : holds list of enum fields for which conversion to string should NOT
 AS_resolver: choose the AS resolver class to use
 extensions_paths: path or list of paths where extensions are to be looked for
 """
-    version = "2.0.1"
+    version = "2.0.1-dev"
     session = ""
     interactive = False
     stealth = "not implemented"
diff --git a/setup.py b/setup.py
index 452b66d1f960f3fa688acec53b5a655f5f61b188..45282c3e67420f2ae9e6e5dbc08754102e1d94e3 100755
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@ archive_util.ARCHIVE_FORMATS["ezip"] = (make_ezipfile,[],'Executable ZIP file')
 
 setup(
     name = 'scapy',
-    version = '2.0.1', 
+    version = '2.0.1-dev', 
     packages=['scapy','scapy/arch', 'scapy/layers','scapy/asn1','scapy/tools','scapy/modules'],
     scripts = ['bin/scapy','bin/UTscapy'],
     data_files = [('share/man/man1', ["doc/scapy.1.gz"])],