diff --git a/dnseval.py b/dnseval.py
index 5795270..4b02fdb 100755
--- a/dnseval.py
+++ b/dnseval.py
@@ -42,7 +42,7 @@
 
 __author__ = 'Babak Farrokhi (babak@farrokhi.net)'
 __license__ = 'BSD'
-__version__ = "1.6.3"
+__version__ = "1.6.4"
 __progname__ = os.path.basename(sys.argv[0])
 shutdown = False
 
diff --git a/dnsping.py b/dnsping.py
index aec18c7..b3d54db 100755
--- a/dnsping.py
+++ b/dnsping.py
@@ -40,7 +40,7 @@
 
 __author__ = 'Babak Farrokhi (babak@farrokhi.net)'
 __license__ = 'BSD'
-__version__ = "1.6.3"
+__version__ = "1.6.4"
 __progname__ = os.path.basename(sys.argv[0])
 shutdown = False
 
diff --git a/dnstraceroute.py b/dnstraceroute.py
index c592476..048a441 100755
--- a/dnstraceroute.py
+++ b/dnstraceroute.py
@@ -44,7 +44,7 @@
 # Global Variables
 __author__ = 'Babak Farrokhi (babak@farrokhi.net)'
 __license__ = 'BSD'
-__version__ = "1.6.3"
+__version__ = "1.6.4"
 _ttl = None
 quiet = False
 whois_cache = {}
diff --git a/setup.py b/setup.py
index 3d5edab..05e59fb 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name="dnsdiag",
-    version="1.6.3",
+    version="1.6.4",
     packages=find_packages(),
     scripts=["dnseval.py", "dnsping.py", "dnstraceroute.py"],
     install_requires=['dnspython>=1.15.0', 'cymruwhois>=1.6'],