diff --git a/pkgs/development/compilers/llvm/11/clang/default.nix b/pkgs/development/compilers/llvm/11/clang/default.nix
index ad0aea0db701..3aa3ba0ee46a 100644
--- a/pkgs/development/compilers/llvm/11/clang/default.nix
+++ b/pkgs/development/compilers/llvm/11/clang/default.nix
@@ -8,7 +8,7 @@ let
     pname = "clang";
     inherit version;
 
-    src = fetch "clang" "00wx4vn9pgans1kqdbii2rl8dlx6nwdgvh27imzc06qxl364fywd";
+    src = fetch "clang" "1p64l5a3x55118nyms1805qbk3r9w37nz1rb7xvbgc9fmyzaffay";
 
     unpackPhase = ''
       unpackFile $src
diff --git a/pkgs/development/compilers/llvm/11/compiler-rt.nix b/pkgs/development/compilers/llvm/11/compiler-rt.nix
index 15e6d77c71a3..e0cb712fe613 100644
--- a/pkgs/development/compilers/llvm/11/compiler-rt.nix
+++ b/pkgs/development/compilers/llvm/11/compiler-rt.nix
@@ -11,7 +11,7 @@ in
 stdenv.mkDerivation rec {
   pname = "compiler-rt";
   inherit version;
-  src = fetch pname "0k98q454hv8ngnan496dh8pj0l8nlxdc0zdv9xpsh9r7way15la9";
+  src = fetch pname "0cpyi5g0wlwyb7gvy47k5rjiipnlhrr3ks4q4rlrlyax6w9dx98n";
 
   nativeBuildInputs = [ cmake python3 llvm ];
   buildInputs = stdenv.lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
diff --git a/pkgs/development/compilers/llvm/11/default.nix b/pkgs/development/compilers/llvm/11/default.nix
index e0b473043ab9..dc75fe9f96e7 100644
--- a/pkgs/development/compilers/llvm/11/default.nix
+++ b/pkgs/development/compilers/llvm/11/default.nix
@@ -6,7 +6,7 @@
 
 let
   release_version = "11.0.0";
-  candidate = "rc3";
+  candidate = "rc5";
   version = "${release_version}${candidate}"; # differentiating these (variables) is important for RCs
   targetConfig = stdenv.targetPlatform.config;
 
@@ -15,7 +15,7 @@ let
     inherit sha256;
   };
 
-  clang-tools-extra_src = fetch "clang-tools-extra" "0qmqzdiiq0prkn6gzzzhijjvmnj7n1h0y49lbw6c97l11frhishm";
+  clang-tools-extra_src = fetch "clang-tools-extra" "0slqx5430pc699idabqnq34s9n0y2fq6q8z8hn5wakbi93dal71r";
 
   tools = stdenv.lib.makeExtensible (tools: let
     callPackage = newScope (tools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch; });
diff --git a/pkgs/development/compilers/llvm/11/libc++/default.nix b/pkgs/development/compilers/llvm/11/libc++/default.nix
index e8ade7dda464..7a7cf06600b6 100644
--- a/pkgs/development/compilers/llvm/11/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/11/libc++/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   pname = "libc++";
   inherit version;
 
-  src = fetch "libcxx" "19lzg6n9vzcl9sk9xn2gbfnl4dzlhmxrm1d19ira1206xlmg39r7";
+  src = fetch "libcxx" "1rlp8hx0nmqpx0gxq8hh9kqbkkzfpadx9chm47c38d4lahdksr1v";
 
   postUnpack = ''
     unpackFile ${libcxxabi.src}
diff --git a/pkgs/development/compilers/llvm/11/libc++abi.nix b/pkgs/development/compilers/llvm/11/libc++abi.nix
index 62e45a89982d..ba3b7fd9d92d 100644
--- a/pkgs/development/compilers/llvm/11/libc++abi.nix
+++ b/pkgs/development/compilers/llvm/11/libc++abi.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   pname = "libc++abi";
   inherit version;
 
-  src = fetch "libcxxabi" "01m66bbx2r8mzbg1k2dk4wrma7rsm668h02drh0v1zcp943bx4ig";
+  src = fetch "libcxxabi" "0214sl9m80hb8v0mdkrwl8l4ca3dvapis23mkld85bnxa8zq2c1q";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = stdenv.lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD && !stdenv.hostPlatform.isWasm) libunwind;
diff --git a/pkgs/development/compilers/llvm/11/libunwind.nix b/pkgs/development/compilers/llvm/11/libunwind.nix
index 6e8c7647dca3..0fc3fcabb33f 100644
--- a/pkgs/development/compilers/llvm/11/libunwind.nix
+++ b/pkgs/development/compilers/llvm/11/libunwind.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   pname = "libunwind";
   inherit version;
 
-  src = fetch pname "1cs0bygglc70aadzhnackd0mamc16y01z2yxv9jglxd0r78gk0ff";
+  src = fetch pname "1xw8y6agnix7qlwh676gm1kbkzh9c1nz7l3vhxjpazbk70biz9mq";
 
   nativeBuildInputs = [ cmake ];
 
diff --git a/pkgs/development/compilers/llvm/11/lld.nix b/pkgs/development/compilers/llvm/11/lld.nix
index 750a2297f055..364fdb727d02 100644
--- a/pkgs/development/compilers/llvm/11/lld.nix
+++ b/pkgs/development/compilers/llvm/11/lld.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   pname = "lld";
   inherit version;
 
-  src = fetch pname "0d77y8nr69bhxhy719ynl52j5h3pjzm31lhyx5f9cpflqk80m5f8";
+  src = fetch pname "1ibyahcxxckdfwh95f1dzxgcf1fsd0r9rpanm3dnn6nb99mn0is4";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ llvm libxml2 ];
diff --git a/pkgs/development/compilers/llvm/11/lldb.nix b/pkgs/development/compilers/llvm/11/lldb.nix
index 2d865460342a..b79496921450 100644
--- a/pkgs/development/compilers/llvm/11/lldb.nix
+++ b/pkgs/development/compilers/llvm/11/lldb.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation (rec {
   pname = "lldb";
   inherit version;
 
-  src = fetch pname "0j56f7nr8awqpn4ynib6qi0riz1x7d4jsl2vhdlizz2fvyxvn5is";
+  src = fetch pname "1v8nvw6rxmi7w3ayjcjan4plb5ryhizc41sras7fza2l7n3cz8iz";
 
   patches = [ ./lldb-procfs.patch ];
 
diff --git a/pkgs/development/compilers/llvm/11/llvm.nix b/pkgs/development/compilers/llvm/11/llvm.nix
index aed0f08608f3..b55ec1f0a102 100644
--- a/pkgs/development/compilers/llvm/11/llvm.nix
+++ b/pkgs/development/compilers/llvm/11/llvm.nix
@@ -32,8 +32,8 @@ in stdenv.mkDerivation (rec {
   pname = "llvm";
   inherit version;
 
-  src = fetch pname "1f9ix9kvpr2nxwqbr73cwqvn9wsm5wlnza0hyji7z7pac8d2dxl6";
-  polly_src = fetch "polly" "18ysra81fsyfcldydg0lxnwjhpd3kwxfdzvfx24dmgrykpbcqbi6";
+  src = fetch pname "1k7i2syqdm29l10di3ws64i02snh9jhd1s2jzgh8565b0vg25wlc";
+  polly_src = fetch "polly" "0l0n09f6sy30x825w85v8n7pvya0ciq89r0abv66n8ggwmrk3rnw";
 
   unpackPhase = ''
     unpackFile $src
diff --git a/pkgs/development/compilers/llvm/11/openmp.nix b/pkgs/development/compilers/llvm/11/openmp.nix
index f4f9bbf2292f..3cc19ad711d6 100644
--- a/pkgs/development/compilers/llvm/11/openmp.nix
+++ b/pkgs/development/compilers/llvm/11/openmp.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   pname = "openmp";
   inherit version;
 
-  src = fetch pname "1025dwn68iw664df831zbkxy8bxilvjkbc6mw4nhv6p5ff7dcw7f";
+  src = fetch pname "1yq7m0kwnlgq8ni719g9fny0x5wrvm8szp11b3q8zz39rqqyphsz";
 
   nativeBuildInputs = [ cmake perl ];
   buildInputs = [ llvm ];