diff --git a/pkgs/development/compilers/spasm-ng/default.nix b/pkgs/development/compilers/spasm-ng/default.nix
new file mode 100644
index 00000000000..8eb0ddb59ef
--- /dev/null
+++ b/pkgs/development/compilers/spasm-ng/default.nix
@@ -0,0 +1,32 @@
+{ stdenv, fetchFromGitHub, gcc, gmp, openssl, zlib }:
+
+stdenv.mkDerivation rec {
+  pname = "spasm-ng";
+
+  version = "unstable-2020-08-03";
+
+  src = fetchFromGitHub {
+    owner = "alberthdev";
+    repo = "spasm-ng";
+    rev = "221898beff2442f459b80ab89c8e1035db97868e";
+    sha256 = "0xspxmp2fir604b4xsk4hi1gjv61rnq2ypppr7cj981jlhicmvjj";
+  };
+
+  nativeBuildInputs = [ gcc ];
+
+  buildInputs = [ gmp openssl zlib ];
+
+  enableParallelBuilding = true;
+
+  installPhase = ''
+    install -Dm755 spasm -t $out/bin
+  '';
+
+  meta = with stdenv.lib; {
+    homepage    = "https://github.com/alberthdev/spasm-ng";
+    description = "Z80 assembler with extra features to support development for TI calculators";
+    license     = licenses.gpl2Plus;
+    maintainers = with maintainers; [ siraben ];
+    platforms   = platforms.unix;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index dd31c73051b..45742500752 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9959,6 +9959,8 @@ in
 
   souffle = callPackage ../development/compilers/souffle { };
 
+  spasm-ng = callPackage ../development/compilers/spasm-ng { };
+
   spirv-llvm-translator = callPackage ../development/compilers/spirv-llvm-translator { };
 
   sqldeveloper = callPackage ../development/tools/database/sqldeveloper {