diff --git a/httpobs/scanner/scanner.py b/httpobs/scanner/scanner.py
index 042e2eb..3eff233 100644
--- a/httpobs/scanner/scanner.py
+++ b/httpobs/scanner/scanner.py
@@ -8,7 +8,7 @@
 from httpobs.scanner.utils import sanitize_headers
 
 # Current algorithm version
-ALGORITHM_VERSION = 2
+ALGORITHM_VERSION = 3
 
 
 def scan(hostname: str, **kwargs):