Update Cyrus SASL recommendation to 2.1.21

diff --git a/README b/README
index f87d9bece98796e3e52c8dea9e5d84a24b781376..dcc58d2324f9303eb865ab304c346aeddfd7f68f 100644 (file)
--- a/README
+++ b/README
@@ -14,7 +14,7 @@ REQUIRED SOFTWARE
 
     Base system (libraries and tools):
         Standard C compiler (required)
-        Cyrus SASL 2.1.18+ (recommended)
+        Cyrus SASL 2.1.21+ (recommended)
         OpenSSL 0.9.7+ (recommended)
         POSIX REGEX software (required)