diff --git a/nix/zkllvm/default.nix b/nix/zkllvm/default.nix
index 2e3f9ef..d786622 100644
--- a/nix/zkllvm/default.nix
+++ b/nix/zkllvm/default.nix
@@ -1,11 +1,11 @@
-{ clangStdenv, fetchgit, cmake, boost180, spdlog, zlib, zstd, python3, icu70 }:
+{ clangStdenv, fetchgit, cmake, boost180, zlib, zstd, python3, icu70 }:
 
 clangStdenv.mkDerivation {
   name = "zkllvm_with_mlir";
   src = fetchgit {
     url = "https://github.com/NilFoundation/zkllvm";
-    rev = "c1bc3aa86905a9e8548514779a51aee27187b90d"; # also change hash + version below in cmakeflags
-    sha256 = "0q8qbmj8kvfsif8g41sw1nvs2r7jddg181nv7vk9h4flhhmw8f7z";
+    rev = "47167ae745c198af8c21f1361aed2d15be223301"; # also change hash + version below in cmakeflags
+    sha256 = "0d77yasbcpyk21dih3w2y2lsjxkrxcd9vj67z4ypkzc3jlnsggah";
     fetchSubmodules = true;
   };
   enableParallelBuilding = true;
@@ -13,7 +13,6 @@ clangStdenv.mkDerivation {
   buildInputs = [
     cmake
     (boost180.override { enableShared = false; })
-    spdlog
     zlib
     zstd
     icu70