diff --git a/pkgs/development/tools/protoc-gen-twirp_swagger/default.nix b/pkgs/development/tools/protoc-gen-twirp_swagger/default.nix
new file mode 100644
index 000000000000..3348759c0113
--- /dev/null
+++ b/pkgs/development/tools/protoc-gen-twirp_swagger/default.nix
@@ -0,0 +1,24 @@
+{ lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule {
+  pname = "protoc-gen-twirp_swagger";
+  version = "unstable-2021-03-29";
+
+  src = fetchFromGitHub {
+    owner = "elliots";
+    repo = "protoc-gen-twirp_swagger";
+    rev = "f21ef47d69e37c1602a7fb26146de05c092d30b6";
+    sha256 = "sha256-uHU15NbHK7SYgNS3VK21H/OqDo/JyyTZdXw3i9lsgLY=";
+  };
+
+  vendorSha256 = "sha256-g0+9l83Fc0XPzsZAKjLBrjD+tv2+Fot57hcilqAhOZk=";
+
+  subPackages = [ "." ];
+
+  meta = with lib; {
+    description = "Swagger generator for twirp";
+    homepage = "https://github.com/elliots/protoc-gen-twirp_swagger";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ jojosch ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index cba1b9ce8fad..886c5463d5d1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -263,6 +263,8 @@ in
 
   protoc-gen-twirp_php = callPackage ../development/tools/protoc-gen-twirp_php { };
 
+  protoc-gen-twirp_swagger = callPackage ../development/tools/protoc-gen-twirp_swagger { };
+
   ptags = callPackage ../development/tools/misc/ptags { };
 
   ptouch-print = callPackage ../misc/ptouch-print { };