diff --git a/pkgs/development/compilers/llvm/8/clang/default.nix b/pkgs/development/compilers/llvm/8/clang/default.nix
index f970ff81e35..44ec6c376cd 100644
--- a/pkgs/development/compilers/llvm/8/clang/default.nix
+++ b/pkgs/development/compilers/llvm/8/clang/default.nix
@@ -9,7 +9,7 @@ let
     name = "clang-${version}";
 
     unpackPhase = ''
-      unpackFile ${fetch "cfe" "07k6vcxnf9n8x21mala3rfvf450iqy24wcsqw4yc8b8lp1fwii6p"}
+      unpackFile ${fetch "cfe" "0svk1f70hvpwrjp6x5i9kqwrqwxnmcrw5s7f4cxyd100mdd12k08"}
       mv cfe-${version}* clang
       sourceRoot=$PWD/clang
       unpackFile ${clang-tools-extra_src}
diff --git a/pkgs/development/compilers/llvm/8/compiler-rt.nix b/pkgs/development/compilers/llvm/8/compiler-rt.nix
index cdc0e27c868..de22585528f 100644
--- a/pkgs/development/compilers/llvm/8/compiler-rt.nix
+++ b/pkgs/development/compilers/llvm/8/compiler-rt.nix
@@ -2,7 +2,7 @@
 stdenv.mkDerivation rec {
   name = "compiler-rt-${version}";
   inherit version;
-  src = fetch "compiler-rt" "16la7ksxwfs6wk3y7w8hh3c1svp095m7j4qfrdgv65lnfwp6rwf9";
+  src = fetch "compiler-rt" "1c919wsm17xnv7lr8bhpq2wkq8113lzlw6hzhfr737j59x3wfddl";
 
   nativeBuildInputs = [ cmake python llvm ];
   buildInputs = stdenv.lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
diff --git a/pkgs/development/compilers/llvm/8/default.nix b/pkgs/development/compilers/llvm/8/default.nix
index 33c985210ed..c5f2163450f 100644
--- a/pkgs/development/compilers/llvm/8/default.nix
+++ b/pkgs/development/compilers/llvm/8/default.nix
@@ -6,14 +6,14 @@
 
 let
   release_version = "8.0.0";
-  version = release_version + "rc5"; # differentiating these is important for rc's
+  version = release_version; # differentiating these is important for rc's
 
   fetch = name: sha256: fetchurl {
-    url = "https://prereleases.llvm.org/${release_version}/rc5/${name}-${version}.src.tar.xz";
+    url = "https://releases.llvm.org/${release_version}/${name}-${version}.src.tar.xz";
     inherit sha256;
   };
 
-  clang-tools-extra_src = fetch "clang-tools-extra" "0705xl8ysjc9pdrggyc51zjq3kwcrckhz4cf4z8wbgi7x2li1djd";
+  clang-tools-extra_src = fetch "clang-tools-extra" "0jwx6nnshp92pd5852y7ip7qhaqdf8az5g0440pli9q8whmi402g";
 
   tools = stdenv.lib.makeExtensible (tools: let
     callPackage = newScope (tools // { inherit stdenv cmake libxml2 python isl release_version version fetch; });
diff --git a/pkgs/development/compilers/llvm/8/libc++/default.nix b/pkgs/development/compilers/llvm/8/libc++/default.nix
index 6b9734e11b9..84db33209eb 100644
--- a/pkgs/development/compilers/llvm/8/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/8/libc++/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation rec {
   name = "libc++-${version}";
 
-  src = fetch "libcxx" "1hdhr4nnynwf1m1581sjl8pdh3gdxsz1rdzdryig7ll9v2lp0rkc";
+  src = fetch "libcxx" "1qlx3wlxrnc5cwc1fcfc2vhfsl7j4294hi8y5kxj8hy8wxsjd462";
 
   postUnpack = ''
     unpackFile ${libcxxabi.src}
diff --git a/pkgs/development/compilers/llvm/8/libc++abi.nix b/pkgs/development/compilers/llvm/8/libc++abi.nix
index 3c328369c5a..976c289e5bc 100644
--- a/pkgs/development/compilers/llvm/8/libc++abi.nix
+++ b/pkgs/development/compilers/llvm/8/libc++abi.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libc++abi-${version}";
 
-  src = fetch "libcxxabi" "1s65sb5vv5l532fmcwvxd3apxm1jjc64yb5qn30f0zzdx9g3rx69";
+  src = fetch "libcxxabi" "1k875f977ybdkpdnr9105wa6hccy9qvpd9xd42n75h7p56bdxmn2";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = stdenv.lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD) libunwind;
diff --git a/pkgs/development/compilers/llvm/8/lld.nix b/pkgs/development/compilers/llvm/8/lld.nix
index 68e6cdc0e06..7fff6843c5f 100644
--- a/pkgs/development/compilers/llvm/8/lld.nix
+++ b/pkgs/development/compilers/llvm/8/lld.nix
@@ -9,7 +9,7 @@
 stdenv.mkDerivation {
   name = "lld-${version}";
 
-  src = fetch "lld" "1w0f3s5rzv90yiv4k9wdvkpc89k3g9crbwf1sh8xbi5jsjnz4539";
+  src = fetch "lld" "0dvf38pbm7jy88g66mz7ikkdfhm2qpj0iyzh62hzycifjbnciblw";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ llvm libxml2 ];
diff --git a/pkgs/development/compilers/llvm/8/lldb.nix b/pkgs/development/compilers/llvm/8/lldb.nix
index a6e0401250c..d40eeb4a207 100644
--- a/pkgs/development/compilers/llvm/8/lldb.nix
+++ b/pkgs/development/compilers/llvm/8/lldb.nix
@@ -17,7 +17,7 @@
 stdenv.mkDerivation {
   name = "lldb-${version}";
 
-  src = fetch "lldb" "1i3hy37qmwqblxpac88ing7mg3jyp2hh08rfv3xhlxj9wddz7nyd";
+  src = fetch "lldb" "0wq3mi76fk86g2g2bcsr0yhagh1dlf2myk641ai58rc116gqp4a9";
 
   postPatch = ''
     # Fix up various paths that assume llvm and clang are installed in the same place
diff --git a/pkgs/development/compilers/llvm/8/llvm.nix b/pkgs/development/compilers/llvm/8/llvm.nix
index 484484e1725..6404469bfdf 100644
--- a/pkgs/development/compilers/llvm/8/llvm.nix
+++ b/pkgs/development/compilers/llvm/8/llvm.nix
@@ -22,8 +22,8 @@
 let
   inherit (stdenv.lib) optional optionals optionalString;
 
-  src = fetch "llvm" "1hb5if7vmgkb52dpj9lyvn986mnk2jbpryng2r1rc5vy25wxw759";
-  polly_src = fetch "polly" "07l3y20j8124x24yqiq0qmz9rhkfh3c48q6vnpgldj2scr3vgyb2";
+  src = fetch "llvm" "0k124sxkfhfi1rca6kzkdraf4axhx99x3cw2rk55056628dvwwl8";
+  polly_src = fetch "polly" "1x4xv3j226rqdddp7b61d71wsx2b8vmmri02ycx27y2fg7ba7xg3";
 
   # Used when creating a version-suffixed symlink of libLLVM.dylib
   shortVersion = with stdenv.lib;
diff --git a/pkgs/development/compilers/llvm/8/openmp.nix b/pkgs/development/compilers/llvm/8/openmp.nix
index 16bfe828e4d..bf85cae5abe 100644
--- a/pkgs/development/compilers/llvm/8/openmp.nix
+++ b/pkgs/development/compilers/llvm/8/openmp.nix
@@ -9,7 +9,7 @@
 stdenv.mkDerivation {
   name = "openmp-${version}";
 
-  src = fetch "openmp" "1nad9ihnaa4xpr77lp9y6zzqqi90d5p280zwv260z9mifkl4dlhm";
+  src = fetch "openmp" "1mf9cpgvix34xlpv0inkgl3qmdvgvp96f7sksqizri0n5xfp1cgp";
 
   nativeBuildInputs = [ cmake perl ];
   buildInputs = [ llvm ];