diff --git a/pkgs/development/compilers/rustc/head.nix b/pkgs/development/compilers/rustc/head.nix
index 9d415eed0b4..d65258a3a08 100644
--- a/pkgs/development/compilers/rustc/head.nix
+++ b/pkgs/development/compilers/rustc/head.nix
@@ -1,16 +1,16 @@
 { stdenv, callPackage }:
 callPackage ./generic.nix {
-  shortVersion = "2015-07-28";
+  shortVersion = "2015-08-09";
   isRelease = false;
-  # src rev for 2015-07-28's nightly channel
-  srcRev = "8b835572b";
-  srcSha = "1qrw0vszr1zipsbp7gcm8kik73d2bfxwv6mniv81ygn9i7v76wfz";
-  snapshotHashLinux686 = "93f6216a35d3bed3cedf244c9aff4cd716336bd9";
-  snapshotHashLinux64 = "d8f4967fc71a153c925faecf95a7feadf7e463a4";
-  snapshotHashDarwin686 = "29852c4d4b5a851f16d627856a279cae5bf9bd01";
-  snapshotHashDarwin64 = "1a20259899321062a0325edb1d22990f05d18708";
-  snapshotDate = "2015-07-17";
-  snapshotRev = "d4432b3";
+  # src rev for 2015-08-09's nightly channel
+  srcRev = "a5d33d891";
+  srcSha = "1iivzk9ggjh7y89rbw275apw4rfmzh4jk50kf0milljhvf72660n";
+  snapshotHashLinux686 = "3459275cdf3896f678e225843fa56f0d9fdbabe8";
+  snapshotHashLinux64 = "e451e3bd6e5fcef71e41ae6f3da9fb1cf0e13a0c";
+  snapshotHashDarwin686 = "428944a7984c0988e77909d82ca2ef77d96a1fbd";
+  snapshotHashDarwin64 = "b0515bb7d2892b9a58282fc865fee11a885406d6";
+  snapshotDate = "2015-07-26";
+  snapshotRev = "a5c12f4";
   patches = [
     ./patches/head.patch
   ] ++ stdenv.lib.optional stdenv.needsPax ./patches/grsec.patch;