diff --git a/pkgs/development/compilers/llvm/11/clang/default.nix b/pkgs/development/compilers/llvm/11/clang/default.nix
index 08f9339dc8e..3aa3ba0ee46 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" "18rv5nxk04fgk4ziix7z4s2cargdpqgvqrk3lnp3wvd6yb5g5p98";
+    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 133db365942..e0cb712fe61 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 "0qfgap6acxffm01hzk38pmzq8ac3isk90531dz0qf7fd5015jvvg";
+  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 cbb3df9f687..dc75fe9f96e 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 = "rc2";
+  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" "0bg2a9nmkdbj5qfd0vvqj8bgchcx1yzmylxxgvh8y5hhj4fz13fs";
+  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 a2ea7e29918..7a7cf06600b 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" "0aaci7iblfczv1jb22zjrwzxcrcx6x7klvjivmxm2zni0n2x3bd4";
+  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 bf7b3fd001d..ba3b7fd9d92 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" "04gqdzs13sw7f7a06h5zm5917d9f1k79l4rcm096grgvf0r7lnqx";
+  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 03b58ca8d1d..0fc3fcabb33 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 "1ch4a2yp821lgzxh9898f7nw2fnkrn3wh25sqg05hlks45znv30y";
+  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 74d18a444fc..364fdb727d0 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 "0lqz5cfids0rrl02p0qq5s18p8ikaa9r5gwa2yvj3bismdhvmar8";
+  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 c0b7f267f75..b7949692145 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 "0hb582kvhxp3kcckz7imrihs0kszdaz09z22xfymyi4vgmcy62q3";
+  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 f15a7d12b80..b55ec1f0a10 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 "151c7nphn18dcw04yxyp6qdj8w19psb8nigf26djf7rhpi1fn0sh";
-  polly_src = fetch "polly" "0caxfpaxhf38nam4gkb9xqlrw20v29cm8jf95ykkbngqw64rmgij";
+  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 f4f9bbf2292..3cc19ad711d 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 ];