diff --git a/pkgs/servers/osmocom/libasn1c/default.nix b/pkgs/servers/osmocom/libasn1c/default.nix
new file mode 100644
index 000000000000..36aae50bd836
--- /dev/null
+++ b/pkgs/servers/osmocom/libasn1c/default.nix
@@ -0,0 +1,42 @@
+{ lib
+, stdenv
+, autoreconfHook
+, fetchFromGitHub
+, pkg-config
+, talloc
+}:
+
+stdenv.mkDerivation rec {
+  pname = "libasn1c";
+  version = "0.9.35";
+
+  src = fetchFromGitHub {
+    owner = "osmocom";
+    repo = "libasn1c";
+    rev = version;
+    hash = "sha256-mi97sWo42U/02xv4QDyUTRh26cyxhcOV5npqCuWsUOc=";
+  };
+
+  postPatch = ''
+    echo "${version}" > .tarball-version
+  '';
+
+  nativeBuildInputs = [
+    autoreconfHook
+    pkg-config
+  ];
+
+  buildInputs = [
+    talloc
+  ];
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    description = "Runtime library of Lev Walkin's asn1c split out as separate library";
+    homepage = "github.com/osmocom/libasn1c/";
+    license = licenses.bsd2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ janik ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a4e580f0dbb3..93678023cbfb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21109,6 +21109,8 @@ with pkgs;
 
   libarchive-qt = libsForQt5.callPackage ../development/libraries/libarchive-qt { };
 
+  libasn1c = callPackage ../servers/osmocom/libasn1c/default.nix { };
+
   libasr = callPackage ../development/libraries/libasr { };
 
   libass = callPackage ../development/libraries/libass { };