diff --git a/pkgs/tools/networking/dcap/default.nix b/pkgs/tools/networking/dcap/default.nix
new file mode 100644
index 000000000000..bad1b9ee1c5a
--- /dev/null
+++ b/pkgs/tools/networking/dcap/default.nix
@@ -0,0 +1,44 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, autoconf
+, automake
+, libtool
+, zlib
+, cunit
+}:
+stdenv.mkDerivation rec {
+  pname = "dcap";
+  version = "2.47.12";
+
+  src = fetchFromGitHub {
+    owner = "dCache";
+    repo = "dcap";
+    rev = version;
+    sha256 = "sha256-pNLEN1YLQGMJNuv8n6bec3qONbwNOYbYDDvkwuP5AR4=";
+  };
+
+  nativeBuildInputs = [ autoconf automake libtool ];
+  buildInputs = [ zlib ];
+
+  preConfigure = ''
+    patchShebangs bootstrap.sh
+    ./bootstrap.sh
+  '';
+
+  doCheck = true;
+
+  checkInputs = [ cunit ];
+
+  outputs = [ "bin" "dev" "out" "man" "doc" ];
+
+  meta = with lib; {
+    description = "dCache access protocol client library";
+    homepage = "https://github.com/dCache/dcap";
+    changelog = "https://github.com/dCache/dcap/blob/master/ChangeLog";
+    license = licenses.lgpl2Only;
+    platforms = platforms.all;
+    mainProgram = "dccp";
+    maintainers = with maintainers; [ ShamrockLee ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 909bd4d04e66..7ac4c0c528c3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1663,6 +1663,8 @@ with pkgs;
 
   cyclonedx-python = callPackage ../tools/misc/cyclonedx-python { };
 
+  dcap = callPackage ../tools/networking/dcap { };
+
   deltachat-cursed = callPackage ../applications/networking/instant-messengers/deltachat-cursed { };
 
   deltachat-desktop = callPackage ../applications/networking/instant-messengers/deltachat-desktop {