diff --git a/pkgs/servers/monitoring/munin/default.nix b/pkgs/servers/monitoring/munin/default.nix
index 64ee8752f1f4..c25c23671ba9 100644
--- a/pkgs/servers/monitoring/munin/default.nix
+++ b/pkgs/servers/monitoring/munin/default.nix
@@ -3,14 +3,14 @@
 }:
 
 stdenv.mkDerivation rec {
-  version = "2.0.65";
+  version = "2.0.66";
   pname = "munin";
 
   src = fetchFromGitHub {
     owner = "munin-monitoring";
     repo = "munin";
     rev = version;
-    sha256 = "0gz9kp1x39xpklq77xpm8kldsc4w87732if90w5p9pw0ip4cn6df";
+    sha256 = "sha256-1aikMRY1YiSQNUnYqsw1Eew9D9JHbkX+BXNCof6YK50=";
   };
 
   buildInputs = [