diff --git a/pkgs/development/compilers/llvm/3.8/clang/default.nix b/pkgs/development/compilers/llvm/3.8/clang/default.nix
index d0d5a2dea14..6052246dad0 100644
--- a/pkgs/development/compilers/llvm/3.8/clang/default.nix
+++ b/pkgs/development/compilers/llvm/3.8/clang/default.nix
@@ -6,7 +6,7 @@ let
     name = "clang-${version}";
 
     unpackPhase = ''
-      unpackFile ${fetch "cfe" "1ybcac8hlr9vl3wg8s4v6cp0c0qgqnwprsv85lihbkq3vqv94504"}
+      unpackFile ${fetch "cfe" "1prc72xmkgx8wrzmrr337776676nhsp1qd3mw2bvb22bzdnq7lsc"}
       mv cfe-${version}.src clang
       sourceRoot=$PWD/clang
       unpackFile ${clang-tools-extra_src}
diff --git a/pkgs/development/compilers/llvm/3.8/default.nix b/pkgs/development/compilers/llvm/3.8/default.nix
index a2a702a617e..df1a775ef96 100644
--- a/pkgs/development/compilers/llvm/3.8/default.nix
+++ b/pkgs/development/compilers/llvm/3.8/default.nix
@@ -2,7 +2,7 @@
 let
   callPackage = newScope (self // { inherit stdenv isl version fetch; });
 
-  version = "3.8.0";
+  version = "3.8.1";
 
   fetch = fetch_v version;
   fetch_v = ver: name: sha256: fetchurl {
@@ -10,8 +10,8 @@ let
     inherit sha256;
   };
 
-  compiler-rt_src = fetch "compiler-rt" "1c2nkp9563873ffz22qmhc0wakgj428pch8rmhym8agjamz3ily8";
-  clang-tools-extra_src = fetch "clang-tools-extra" "1i0yrgj8qrzjjswraz0i55lg92ljpqhvjr619d268vka208aigdg";
+  compiler-rt_src = fetch "compiler-rt" "0p0y85c7izndbpg2l816z7z7558axq11d5pwkm4h11sdw7d13w0d";
+  clang-tools-extra_src = fetch "clang-tools-extra" "15n39r4ssphpaq4a0wzyjm7ilwxb0bch6nrapy8c5s8d49h5qjk6";
 
   self = {
     llvm = callPackage ./llvm.nix {
diff --git a/pkgs/development/compilers/llvm/3.8/libc++/default.nix b/pkgs/development/compilers/llvm/3.8/libc++/default.nix
index deeedaad5bf..15f7ee1e3e4 100644
--- a/pkgs/development/compilers/llvm/3.8/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/3.8/libc++/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation rec {
   name = "libc++-${version}";
 
-  src = fetch "libcxx" "0yr3fh8vj38289b9cwk37zsy7x98dcd3kjy7xxy8mg20p48lb01n";
+  src = fetch "libcxx" "1k7f9qk5bgwa02ksh6yr9hccwcbhmcdzl1fpbdw6s2c89iwg7mvp";
 
   postUnpack = ''
     unpackFile ${libcxxabi.src}
diff --git a/pkgs/development/compilers/llvm/3.8/libc++abi.nix b/pkgs/development/compilers/llvm/3.8/libc++abi.nix
index fdbc002688e..61ff6341c30 100644
--- a/pkgs/development/compilers/llvm/3.8/libc++abi.nix
+++ b/pkgs/development/compilers/llvm/3.8/libc++abi.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libc++abi-${version}";
 
-  src = fetch "libcxxabi" "0175rv2ynkklbg96kpw13iwhnzyrlw3r12f4h09p9v7nmxqhivn5";
+  src = fetch "libcxxabi" "1qfs2iis1i0ppv11jndc98cvd7s25pj46pq2sfyldmzswdxmzdg1";
 
   buildInputs = [ cmake ] ++ stdenv.lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD) libunwind;
 
diff --git a/pkgs/development/compilers/llvm/3.8/lldb.nix b/pkgs/development/compilers/llvm/3.8/lldb.nix
index d578d7ca70a..568476e44ac 100644
--- a/pkgs/development/compilers/llvm/3.8/lldb.nix
+++ b/pkgs/development/compilers/llvm/3.8/lldb.nix
@@ -15,7 +15,7 @@
 stdenv.mkDerivation {
   name = "lldb-${version}";
 
-  src = fetch "lldb" "0dasg12gf5crrd9pbi5rd1y8vwlgqp8nxgw9g4z47w3x2i28zxp3";
+  src = fetch "lldb" "18z8vhfgh4m57hl66i83cp4d4mv3i86z2hjhbp5rvqs7d88li49l";
 
   postUnpack = ''
     # Hack around broken standalone builf as of 3.8
@@ -25,12 +25,9 @@ stdenv.mkDerivation {
     cp "$(ls -d llvm-*.src)/lib/Support/regex_impl.h" "$srcDir/tools/lib/Support/"
   '';
 
-  buildInputs = [ cmake python which swig ncurses zlib libedit ];
+  buildInputs = [ cmake python which swig ncurses zlib libedit llvm ];
 
-  preConfigure = ''
-    export CXXFLAGS="-pthread"
-    export LDFLAGS="-ldl"
-  '';
+  hardeningDisable = [ "format" ];
 
   cmakeFlags = [
     "-DLLDB_PATH_TO_LLVM_BUILD=${llvm}"
diff --git a/pkgs/development/compilers/llvm/3.8/llvm.nix b/pkgs/development/compilers/llvm/3.8/llvm.nix
index fc29d00a524..6112228bf4f 100644
--- a/pkgs/development/compilers/llvm/3.8/llvm.nix
+++ b/pkgs/development/compilers/llvm/3.8/llvm.nix
@@ -18,7 +18,7 @@
 }:
 
 let
-  src = fetch "llvm" "0ikfq0gxac8xpvxj23l4hk8f12ydx48fljgrz1gl9xp0ks704nsm";
+  src = fetch "llvm" "1ybmnid4pw2hxn12ax5qa5kl1ldfns0njg8533y3mzslvd5cx0kf";
 in stdenv.mkDerivation rec {
   name = "llvm-${version}";