diff --git a/flake.nix b/flake.nix
index 70a99d6db5a..b7e5e5033eb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -16,7 +16,7 @@
     let
       allOverlays = [
         (_: _: {
-          llvm-version = 15;
+          llvm-version = 17;
           llvm-backend-build-type = "Release";
         })
         llvm-backend.overlays.default