diff --git a/markov.py b/markov.py
index aa57472..4718f57 100644
--- a/markov.py
+++ b/markov.py
@@ -33,7 +33,7 @@ class MarkovChainer(object):
 
     def add_text(self, text):
         text = re.sub(r'\n\s*\n/m', ".", text)
-        seps = '([.!?;])'
+        seps = '([.!?;:])'
         pieces = re.split(seps, text)
         sentence = ""
         for piece in pieces: