diff --git a/pkgs/servers/memcached/default.nix b/pkgs/servers/memcached/default.nix
index f1e2c027db6a..52dee4aa95dd 100644
--- a/pkgs/servers/memcached/default.nix
+++ b/pkgs/servers/memcached/default.nix
@@ -1,12 +1,12 @@
 {lib, stdenv, fetchurl, cyrus_sasl, libevent, nixosTests }:
 
 stdenv.mkDerivation rec {
-  version = "1.6.29";
+  version = "1.6.31";
   pname = "memcached";
 
   src = fetchurl {
     url = "https://memcached.org/files/${pname}-${version}.tar.gz";
-    sha256 = "sha256-JpZD1Ri3uiAzx6H2b9/FYNcnJaKCIZTZDII1QIxEOkk=";
+    sha256 = "sha256-INjTObj7H2x5zuIFWdxv+13+6E255Yn06yFPbSyHPvU=";
   };
 
   configureFlags = [