diff --git a/pkgs/development/nim-packages/coap/default.nix b/pkgs/development/nim-packages/coap/default.nix
new file mode 100644
index 000000000000..b7a35dcb1a96
--- /dev/null
+++ b/pkgs/development/nim-packages/coap/default.nix
@@ -0,0 +1,20 @@
+{ lib, buildNimPackage, fetchFromGitea, taps }:
+
+buildNimPackage rec {
+  pname = "coap";
+  version = "20230125";
+  src = fetchFromGitea {
+    domain = "codeberg.org";
+    owner = "eris";
+    repo = "${pname}-nim";
+    rev = version;
+    hash = "sha256-wlDyqRxXTrX+zXDIe2o9FTU2o26LO/6m7H/FGok1JDw=";
+  };
+  propagatedBuildInputs = [ taps ];
+  meta = src.meta // {
+    description =
+      "Nim implementation of the Constrained Application Protocol (CoAP) over TCP";
+    license = lib.licenses.agpl3Plus;
+    maintainers = with lib.maintainers; [ ehmry ];
+  };
+}
diff --git a/pkgs/top-level/nim-packages.nix b/pkgs/top-level/nim-packages.nix
index 9c707d50f560..1093d49dcf5c 100644
--- a/pkgs/top-level/nim-packages.nix
+++ b/pkgs/top-level/nim-packages.nix
@@ -30,6 +30,8 @@ lib.makeScope newScope (self:
 
     chroma = callPackage ../development/nim-packages/chroma { };
 
+    coap = callPackage  ../development/nim-packages/coap { };
+
     docopt = callPackage ../development/nim-packages/docopt { };
 
     flatty = callPackage ../development/nim-packages/flatty { };