diff --git a/pkgs/by-name/li/libblake3/package.nix b/pkgs/by-name/li/libblake3/package.nix
new file mode 100644
index 0000000000000..bd03de8f49561
--- /dev/null
+++ b/pkgs/by-name/li/libblake3/package.nix
@@ -0,0 +1,45 @@
+{
+  lib,
+  stdenv,
+  cmake,
+  fetchFromGitHub,
+  fetchpatch,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "libblake3";
+  version = "1.5.4";
+
+  src = fetchFromGitHub {
+    owner = "BLAKE3-team";
+    repo = "BLAKE3";
+    rev = "refs/tags/${finalAttrs.version}";
+    hash = "sha256-WatbhExS0j2neYsrfbNhYxrckLiXHwQBjctuowtQW+U=";
+  };
+
+  sourceRoot = finalAttrs.src.name + "/c";
+
+  patches = [
+    # Fix pkg-config for absolute CMAKE_INSTALL_*DIR
+    (fetchpatch {
+      url = "https://github.com/BLAKE3-team/BLAKE3/commit/aa3e8ec32a389461babde3789d6ac50ee3c38662.patch";
+      hash = "sha256-V8o85EnRoqYvatqYwdr7h2TBwSOSlKrqfJWPPkQhU+c=";
+      stripLen = 1;
+    })
+  ];
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  meta = {
+    description = "Official C implementation of BLAKE3";
+    homepage = "https://github.com/BLAKE3-team/BLAKE3/tree/master/c";
+    license = with lib.licenses; [
+      asl20
+      cc0
+    ];
+    maintainers = with lib.maintainers; [ fgaz ];
+    platforms = lib.platforms.all;
+  };
+})