diff --git a/bin/katip b/bin/katip
index 3e6a92d..a8bb1e3 100755
--- a/bin/katip
+++ b/bin/katip
@@ -63,7 +63,7 @@ def parse_change_log
 
   output.each do |line|
 
-    line.gsub!(/#[1-9][0-9]*/) {|s| '[' + s + "](#{ISSUE_URL}" + s[-(s.length-1)..-1] + ')'}
+    line.encode("utf-8", invalid: :replace, undef: :replace, replace: '').gsub!(/#[1-9][0-9]*/) {|s| '[' + s + "](#{ISSUE_URL}" + s[-(s.length-1)..-1] + ')'}
 
   end