diff --git a/pkgs/development/compilers/spirv-llvm-translator/default.nix b/pkgs/development/compilers/spirv-llvm-translator/default.nix
index b99019a0f3d7..4db3b93217d7 100644
--- a/pkgs/development/compilers/spirv-llvm-translator/default.nix
+++ b/pkgs/development/compilers/spirv-llvm-translator/default.nix
@@ -29,11 +29,11 @@ let
       rev = "v${version}";
       hash = "sha256-OsDohXRxovtEXaWiRGp8gJ0dXmoALyO+ZimeSO8aPVI=";
     } else if llvmMajor == "14" then rec{
-      version = "14.0.0";
-      rev = "v${version}";
-      hash = "sha256-BhNAApgZ/w/92XjpoDY6ZEIhSTwgJ4D3/EfNvPmNM2o=";
+      version = "14.0.0+unstable-2023-06-22";
+      rev = "23f398bf369093b1fd67459db8071ffcc6b92658";
+      hash = "sha256-o7cVj5/ZMER2CvfxL4pRb2qCIxC/HFUPiitf2fKtCyk=";
     } else if llvmMajor == "11" then {
-      version = "unstable-2022-05-04";
+      version = "11.0.0+unstable-2022-05-04";
       rev = "4ef524240833abfeee1c5b9fff6b1bd53f4806b3"; # 267 commits ahead of v11.0.0
       hash = "sha256-NoIoa20+2sH41rEnr8lsMhtfesrtdPINiXtUnxYVm8s=";
     } else throw "Incompatible LLVM version.";
@@ -48,12 +48,19 @@ disable-warnings-if-gcc13 (stdenv.mkDerivation {
     inherit (branch) rev hash;
   };
 
-  patches = lib.optionals (llvmMajor == "16")[
+  patches = lib.optionals (llvmMajor == "16") [
     # Fixes builds that link against external LLVM dynamic library
     (fetchpatch {
       url = "https://github.com/KhronosGroup/SPIRV-LLVM-Translator/commit/f3b9b604d7eda18d0d1029d94a6eebd33aa3a3fe.patch";
       hash = "sha256-opDjyZcy7O4wcSfm/A51NCIiDyIvbcmbv9ns1njdJbc=";
     })
+  ] ++ lib.optionals (llvmMajor == "14") [
+    (fetchpatch {
+      # tries to install llvm-spirv into llvm nix store path
+      url = "https://github.com/KhronosGroup/SPIRV-LLVM-Translator/commit/cce9a2f130070d799000cac42fe24789d2b777ab.patch";
+      revert = true;
+      hash = "sha256-GbFacttZRDCgA0jkUoFA4/B3EDn3etweKvM09OwICJ8=";
+    })
   ];
 
   nativeBuildInputs = [ pkg-config cmake ]
@@ -71,7 +78,7 @@ disable-warnings-if-gcc13 (stdenv.mkDerivation {
     "-DLLVM_SPIRV_BUILD_EXTERNAL=YES"
     # RPATH of binary /nix/store/.../bin/llvm-spirv contains a forbidden reference to /build/
     "-DCMAKE_SKIP_BUILD_RPATH=ON"
-  ] ++ lib.optionals (llvmMajor != "11") [ "-DLLVM_EXTERNAL_SPIRV_HEADERS_SOURCE_DIR=${spirv-headers.src}" ];
+  ] ++ lib.optional (llvmMajor != "11") "-DLLVM_EXTERNAL_SPIRV_HEADERS_SOURCE_DIR=${spirv-headers.src}";
 
   # FIXME: CMake tries to run "/llvm-lit" which of course doesn't exist
   doCheck = false;