diff --git a/pkgs/applications/virtualization/sail-riscv/default.nix b/pkgs/applications/virtualization/sail-riscv/default.nix
new file mode 100644
index 000000000000..b952b0f18918
--- /dev/null
+++ b/pkgs/applications/virtualization/sail-riscv/default.nix
@@ -0,0 +1,55 @@
+{ stdenv
+, fetchFromGitHub
+, lib
+, arch
+, ocamlPackages
+, ocaml
+, zlib
+, z3
+}:
+
+
+stdenv.mkDerivation rec {
+  pname = "sail-riscv";
+  version = "0.5";
+
+  src = fetchFromGitHub {
+    owner = "riscv";
+    repo = pname;
+    rev = version;
+    hash = "sha256-7PZNNUMaCZEBf0lOCqkquewRgZPooBOjIbGF7JlLnEo=";
+  };
+
+  nativeBuildInputs = with ocamlPackages; [ ocamlbuild findlib ocaml z3 sail ];
+  buildInputs = with ocamlPackages; [ zlib linksem ];
+  strictDeps = true;
+
+  postPatch = ''
+    rm -r prover_snapshots
+  '';
+
+  makeFlags = [
+    "SAIL=sail"
+    "ARCH=${arch}"
+    "SAIL_DIR=${ocamlPackages.sail}/share/sail"
+  ];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    cp c_emulator/riscv_sim_${arch} $out/bin
+    mkdir $out/share/
+    cp -r generated_definitions/{coq,hol4,isabelle} $out/share/
+
+    runHook postInstall
+  '';
+
+
+  meta = with lib; {
+    homepage = "https://github.com/riscv/sail-riscv";
+    description = "A formal specification of the RISC-V architecture, written in Sail";
+    maintainers = with maintainers; [ genericnerdyusername ];
+    license = licenses.bsd2;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e2ff22c0ad24..9db20e4eacca 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -38112,6 +38112,14 @@ with pkgs;
 
   sailsd = callPackage ../misc/sailsd { };
 
+  sail-riscv-rv32 = callPackage ../applications/virtualization/sail-riscv {
+    arch = "RV32";
+  };
+
+  sail-riscv-rv64 = callPackage ../applications/virtualization/sail-riscv {
+    arch = "RV64";
+  };
+
   shc = callPackage ../tools/security/shc { };
 
   shellz = callPackage ../tools/security/shellz { };