diff --git a/pkgs/servers/squid/default.nix b/pkgs/servers/squid/default.nix
index 1133b697a25..2da0316483b 100644
--- a/pkgs/servers/squid/default.nix
+++ b/pkgs/servers/squid/default.nix
@@ -2,11 +2,11 @@
 , expat, libxml2, openssl }:
 
 stdenv.mkDerivation rec {
-  name = "squid-3.5.26";
+  name = "squid-3.5.27";
 
   src = fetchurl {
     url = "http://www.squid-cache.org/Versions/v3/3.5/${name}.tar.xz";
-    sha256 = "10m9g7wcik11gv7xqpv9wbkmmfbwxs00s1jm8hgqh63fgp5yx8ds";
+    sha256 = "1v7hzvwwghrs751iag90z8909nvyp3c5jynaz4hmjqywy9kl7nsx";
   };
 
   buildInputs = [