diff --git a/pkgs/build-support/fetchurl/mirrors.nix b/pkgs/build-support/fetchurl/mirrors.nix
index 2f6a4d36327c..cf986a064d9d 100644
--- a/pkgs/build-support/fetchurl/mirrors.nix
+++ b/pkgs/build-support/fetchurl/mirrors.nix
@@ -280,6 +280,7 @@ rec {
     http://archive.apache.org/dist/ # fallback for old releases
     ftp://ftp.funet.fi/pub/mirrors/apache.org/
     http://apache.cs.uu.nl/dist/
+    http://apache.cs.utah.edu/
   ];
 
   postgresql = [
diff --git a/pkgs/servers/nosql/cassandra/1.2.nix b/pkgs/servers/nosql/cassandra/1.2.nix
index 75992ceb9ef5..1507787ae003 100644
--- a/pkgs/servers/nosql/cassandra/1.2.nix
+++ b/pkgs/servers/nosql/cassandra/1.2.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     inherit sha256;
-    url = "http://apache.cs.utah.edu/cassandra/${version}/apache-${name}-bin.tar.gz";
+    url = "mirror://apache/cassandra/${version}/apache-${name}-bin.tar.gz";
   };
 
   nativeBuildInputs = [ makeWrapper ];
diff --git a/pkgs/servers/nosql/cassandra/2.0.nix b/pkgs/servers/nosql/cassandra/2.0.nix
index a4aca1c55c13..d1c76c83a7ee 100644
--- a/pkgs/servers/nosql/cassandra/2.0.nix
+++ b/pkgs/servers/nosql/cassandra/2.0.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     inherit sha256;
-    url = "http://apache.cs.utah.edu/cassandra/${version}/apache-${name}-bin.tar.gz";
+    url = "mirror://apache/cassandra/${version}/apache-${name}-bin.tar.gz";
   };
 
   nativeBuildInputs = [ makeWrapper ];
diff --git a/pkgs/servers/nosql/cassandra/2.1.nix b/pkgs/servers/nosql/cassandra/2.1.nix
index 9869682ae8a6..36905b5675a0 100644
--- a/pkgs/servers/nosql/cassandra/2.1.nix
+++ b/pkgs/servers/nosql/cassandra/2.1.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     inherit sha256;
-    url = "http://apache.cs.utah.edu/cassandra/${version}/apache-${name}-bin.tar.gz";
+    url = "mirror://apache/cassandra/${version}/apache-${name}-bin.tar.gz";
   };
 
   nativeBuildInputs = [ makeWrapper ];