diff --git a/mozilla/security/nss/lib/certdb/certdb.h b/mozilla/security/nss/lib/certdb/certdb.h
index 708dfdf9687..51fef4118b4 100644
--- a/mozilla/security/nss/lib/certdb/certdb.h
+++ b/mozilla/security/nss/lib/certdb/certdb.h
@@ -43,7 +43,7 @@
 /* version number of certificate database */
 #define CERT_DB_FILE_VERSION		7
 #ifdef USE_NS_ROOTS
-#define CERT_DB_CONTENT_VERSION		27
+#define CERT_DB_CONTENT_VERSION		28
 #else
 #define CERT_DB_CONTENT_VERSION		2
 #endif