diff --git a/gnu/packages/dns.scm b/gnu/packages/dns.scm
index 57ac297a05..0c965f8c20 100644
--- a/gnu/packages/dns.scm
+++ b/gnu/packages/dns.scm
@@ -318,14 +318,14 @@ (define-public yadifa
 (define-public knot
   (package
     (name "knot")
-    (version "2.4.2")
+    (version "2.4.3")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://secure.nic.cz/files/knot-dns/"
                                   name "-" version ".tar.xz"))
               (sha256
                (base32
-                "0licfnjl0mq9lzdn6frzdasrj65253xc9n33dhvxcjqr3z7pznip"))
+                "0kvhibnnk77nqi9gdw2zbnp0dydfcy6zy96qv0f3a7wwnay5h0pr"))
               (modules '((guix build utils)))
               (snippet
                '(begin