diff --git a/pkgs/development/compilers/llvm/11/clang/default.nix b/pkgs/development/compilers/llvm/11/clang/default.nix
index 3a3e384ad982..99d897841c90 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" "0kab4zmkxffg98a3rx95756jlwhxflalin5w05g1anpwxv175xbk";
+    src = fetch "clang" "1sr4n8dfs6mp16g0vrij56cbp8ii7pb1vfr8d6xdkzi3sjwnmzhw";
     inherit clang-tools-extra_src;
 
     unpackPhase = ''
diff --git a/pkgs/development/compilers/llvm/11/compiler-rt.nix b/pkgs/development/compilers/llvm/11/compiler-rt.nix
index 091f327550b8..ddb9dcfad66c 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 "1z470r8c5aahdwkmflglx998n0i77j8b1c69d7cir1kf27qy6yq8";
+  src = fetch pname "0iwppvl8sd3nbskbn6w0rdklqi1q669zida5fy1s1gzg105j1vip";
 
   nativeBuildInputs = [ cmake python3 llvm ];
   buildInputs = 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 ca9ef4382b4b..6d41ce947ee1 100644
--- a/pkgs/development/compilers/llvm/11/default.nix
+++ b/pkgs/development/compilers/llvm/11/default.nix
@@ -6,8 +6,8 @@
 }:
 
 let
-  release_version = "11.0.1";
-  candidate = ""; # empty or "rcN"
+  release_version = "11.1.0";
+  candidate = "rc2"; # empty or "rcN"
   dash-candidate = lib.optionalString (candidate != "") "-${candidate}";
   version = "${release_version}${dash-candidate}"; # differentiating these (variables) is important for RCs
   targetConfig = stdenv.targetPlatform.config;
@@ -17,7 +17,7 @@ let
     inherit sha256;
   };
 
-  clang-tools-extra_src = fetch "clang-tools-extra" "1j8n6n4l54k2lrdxh266y1fl4z8vy5dc76wsf0csk5n3ikfi38ic";
+  clang-tools-extra_src = fetch "clang-tools-extra" "0ikwy3q6747g7r2qxdd6k56akw3kza0a6s0vimdzr7fhy8hlnr7h";
 
   tools = 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 7a34977afe24..c4e61a67b738 100644
--- a/pkgs/development/compilers/llvm/11/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/11/libc++/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   pname = "libc++";
   inherit version;
 
-  src = fetch "libcxx" "0gaybwkn76vhakvipxslp7pmv2wm7agxkqwk5f5aizhzc9lzdmcz";
+  src = fetch "libcxx" "1wh9ha46681fpcp29k3g38ryy1c28hdhvry6zd04n35nfvv0h11i";
 
   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 22e4ac4abe4c..22566acbe5e8 100644
--- a/pkgs/development/compilers/llvm/11/libc++abi.nix
+++ b/pkgs/development/compilers/llvm/11/libc++abi.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   pname = "libc++abi";
   inherit version;
 
-  src = fetch "libcxxabi" "0gv8pxq95gvsybldj21hdfkmm0r5cn1z7jhd72l231n0lmb70saa";
+  src = fetch "libcxxabi" "0y2s1yz15hgj26j763kg32bd5vh2gn2ham5ligs7jrx97hs0fw31";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = 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 1b5fe0f57880..6f346af2ca3a 100644
--- a/pkgs/development/compilers/llvm/11/libunwind.nix
+++ b/pkgs/development/compilers/llvm/11/libunwind.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation rec {
   pname = "libunwind";
   inherit version;
 
-  src = fetch pname "0zsixkaiwp007afxlpsf5dc7wfrv8sj9wxzjw6f1r4bjv1rv3cvd";
+  src = fetch pname "1q1hi4wz6bibblbln2mlmngrc0r042khp96d397ndvv6gx92ha4z";
 
   nativeBuildInputs = [ cmake ];
 
diff --git a/pkgs/development/compilers/llvm/11/lld.nix b/pkgs/development/compilers/llvm/11/lld.nix
index cead886f49b7..e15ab3b645f8 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 "1dq82dkam8x2niha18v7ckh30zmzyclydzipqkf7h41r3ah0vfk0";
+  src = fetch pname "02nzm5bpnzhg8p6rz2786my3pr0wg82mwb15cc5f5rg4gdmj7b8w";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ llvm libxml2 ];
diff --git a/pkgs/development/compilers/llvm/11/lldb.nix b/pkgs/development/compilers/llvm/11/lldb.nix
index fcc73cfdeb6d..274d7e6e31ef 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 "1yzjbsn81l2r3v9js2fxrglkwvz1f2rxyxh6430nydbrs0bqklz8";
+  src = fetch pname "09pz3ssi9z00zq14qpvnyqghwlim9r7zsnp3vdwdyjixwlpvmgn0";
 
   patches = [ ./lldb-procfs.patch ];
 
diff --git a/pkgs/development/compilers/llvm/11/llvm.nix b/pkgs/development/compilers/llvm/11/llvm.nix
index 868da1a5b207..d48ceae2a9c1 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 "0a5mb65xa5bal8q6cb37xgkqis2bip87fsafgq3wbsva9cjprn6c";
-  polly_src = fetch "polly" "1smrqm9s0r2g9h0v0nil6y9wn2ih4l5bddk4dhgn538ngc7cxpq8";
+  src = fetch pname "1i2lism04pp7cy38ika43d2parnhghzk23bg62f9wk504k8wxfrx";
+  polly_src = fetch "polly" "1dv1fh3v3kkyim6cf6y5az365yh5xi17xmzn4vhsh8dgq6sbv6ar";
 
   unpackPhase = ''
     unpackFile $src
diff --git a/pkgs/development/compilers/llvm/11/openmp.nix b/pkgs/development/compilers/llvm/11/openmp.nix
index 5503a98ae5f6..c1665c4b9cf5 100644
--- a/pkgs/development/compilers/llvm/11/openmp.nix
+++ b/pkgs/development/compilers/llvm/11/openmp.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   pname = "openmp";
   inherit version;
 
-  src = fetch pname "19rcv25y41ww3zlfg0lwprzijl3cn7jgc0v5540jzpp7j0ds45ad";
+  src = fetch pname "0k59rlyc5kxp58lbx8rqrj1xfcwjqgaq68hn8agavvqgqgxfp2v2";
 
   nativeBuildInputs = [ cmake perl ];
   buildInputs = [ llvm ];